clan: 11-(30,15,1122), 2 times reduced t, 2 times derived, 2 times residual
Tran van Trung construction with complementary design for 5-(25,12,22440) (# 2517)
design 6-(26,13,22440) (# 9873) with respect to smaller t
Tran van Trung construction (left) for 5-(25,13,36465) (# 9878) : der= 5-(25,12,22440) and res= 5-(25,13,36465) - the given design is the residual.
supplementary design of 6-(26,13,55080) (# 9882) with respect to smaller t

# 2519: 5-(26,12,33660)

clan: 11-(30,15,1122), 2 times reduced t, 3 times derived, 1 times residual
Tran van Trung construction (left) for 5-(25,12,22440) (# 2517) : der= 5-(25,11,11220) and res= 5-(25,12,22440) - the given design is the residual.
residual design of 6-(27,12,15708) (# 10803)

# 2520: 5-(27,13,92565)

clan: 11-(30,15,1122), 3 times reduced t, 2 times derived, 1 times residual
Tran van Trung construction (left) for 5-(26,13,58905) (# 2518) : der= 5-(26,12,33660) and res= 5-(26,13,58905) - the given design is the residual.
Tran van Trung construction (right) for 5-(26,12,33660) (# 2519) : der= 5-(26,12,33660) and res= 5-(26,13,58905) - the given design is the derived.

# 2521: 5-(28,14,236555)

clan: 11-(30,15,1122), 4 times reduced t, 1 times derived, 1 times residual
Tran van Trung construction with complementary design for 5-(27,13,92565) (# 2520)

# 2522: 5-(24,12,14592)

clan: 7-(24,12,1792), 2 times reduced t
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2523: 5-(24,12,14598)

clan: 5-(24,12,14598)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2524: 5-(24,12,14604)

clan: 5-(24,12,14604)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2525: 5-(24,12,14610)

clan: 5-(24,12,14610)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2526: 5-(24,12,14616)

clan: 5-(24,12,14616)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2527: 5-(24,12,14622)

clan: 5-(24,12,14622)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2528: 5-(24,12,14628)

clan: 5-(24,12,14628)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2529: 5-(24,12,14634)

clan: 5-(24,12,14634)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2530: 5-(24,12,14640)

clan: 5-(24,12,14640)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2531: 5-(24,12,14646)

clan: 5-(24,12,14646)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2532: 5-(24,12,14652)

clan: 5-(24,12,14652)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2533: 5-(24,12,14658)

clan: 5-(24,12,14658)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2534: 5-(24,12,14664)

clan: 13-(32,16,282), 4 times derived, 4 times residual
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2535: 5-(24,12,14670)

clan: 5-(24,12,14670)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2536: 5-(24,12,14676)

clan: 5-(24,12,14676)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2537: 5-(24,12,14682)

clan: 5-(24,12,14682)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2538: 5-(24,12,14688)

clan: 5-(24,12,14688)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2539: 5-(24,12,14694)

clan: 5-(24,12,14694)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2540: 5-(24,12,14700)

clan: 5-(24,12,14700)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2541: 5-(24,12,14712)

clan: 5-(24,12,14712)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2542: 5-(24,12,14718)

clan: 5-(24,12,14718)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2543: 5-(24,12,14724)

clan: 5-(24,12,14724)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2544: 5-(24,12,14730)

clan: 5-(24,12,14730)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2545: 5-(24,12,14736)

clan: 5-(24,12,14736)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2546: 5-(24,12,14742)

clan: 11-(30,15,1134), 3 times derived, 3 times residual
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2547: 5-(24,12,14748)

clan: 5-(24,12,14748)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2548: 5-(24,12,14754)

clan: 5-(24,12,14754)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2549: 5-(24,12,14760)

clan: 5-(24,12,14760)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2550: 5-(24,12,14766)

clan: 5-(24,12,14766)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2551: 5-(24,12,14772)

clan: 5-(24,12,14772)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2552: 5-(24,12,14778)

clan: 5-(24,12,14778)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2553: 5-(24,12,14784)

clan: 5-(24,12,14784)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2554: 5-(24,12,14790)

clan: 5-(24,12,14790)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2555: 5-(24,12,14796)

clan: 5-(24,12,14796)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2556: 5-(24,12,14802)

clan: 5-(24,12,14802)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2557: 5-(24,12,14808)

clan: 5-(24,12,14808)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2558: 5-(24,12,14814)

clan: 5-(24,12,14814)
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2559: 5-(24,12,1482)

clan: 13-(30,15,4), 2 times reduced t, 3 times derived, 3 times residual
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23

# 2560: 5-(25,12,2280)

clan: 13-(30,15,4), 3 times reduced t, 3 times derived, 2 times residual
Tran van Trung construction (left) for 5-(24,12,1482) (# 2559) : der= 5-(24,11,798) and res= 5-(24,12,1482) - the given design is the residual.

# 2561: 5-(26,13,5985)

clan: 13-(30,15,4), 4 times reduced t, 2 times derived, 2 times residual
Tran van Trung construction with complementary design for 5-(25,12,2280) (# 2560)

# 2562: 5-(26,12,3420)

clan: 13-(30,15,4), 4 times reduced t, 3 times derived, 1 times residual
Tran van Trung construction (left) for 5-(25,12,2280) (# 2560) : der= 5-(25,11,1140) and res= 5-(25,12,2280) - the given design is the residual.

# 2563: 5-(27,13,9405)

clan: 13-(30,15,4), 5 times reduced t, 2 times derived, 1 times residual
Tran van Trung construction (left) for 5-(26,13,5985) (# 2561) : der= 5-(26,12,3420) and res= 5-(26,13,5985) - the given design is the residual.
Tran van Trung construction (right) for 5-(26,12,3420) (# 2562) : der= 5-(26,12,3420) and res= 5-(26,13,5985) - the given design is the derived.

# 2564: 5-(28,14,24035)

clan: 13-(30,15,4), 6 times reduced t, 1 times derived, 1 times residual
Tran van Trung construction with complementary design for 5-(27,13,9405) (# 2563)

# 2565: 5-(24,12,14820)

clan: 15-(32,16,5), 2 times reduced t, 4 times derived, 4 times residual
$ PSL(2,23) $ % -group 3 PSL 2 23 PSL_2_23
Tran van Trung construction with complementary design for 5-(23,11,5460) (# 8802)
design 6-(24,12,5460) (# 9176) with respect to smaller t
Tran van Trung construction (left) for 5-(23,12,9360) (# 9181) : der= 5-(23,11,5460) and res= 5-(23,12,9360) - the given design is the residual.
residual design of 6-(25,12,7980) (# 9184)
supplementary design of 6-(24,12,13104) (# 9186) with respect to smaller t
derived from 6-(25,13,14820) (# 9199)
residual design of supplementary of 6-(25,12,19152) (# 9201)
derived from supplementary of 6-(25,13,35568) (# 9202)