Design No 1 Group Size 13 2B674668 2E9C9F69
Block Intersection Formula 
{(2)^11 (3)^13 (5)^1 (6)^1 }^26 
Initial Blocks, modulo 13:
0 1 2 3 5 9 
0 1 3 6 7 11 

Design No 2 Group Size 39 EDD64F53 8A577208
Group generators
Treatments are numbered first (invariants LAST therein), then blocks, then sub-blocks, if applicable, then replicates, if applicable
[[1,3,9],[2,6,5],[4,12,10],[7,8,11],[13,16,25],[14,19,21],[15,22,17],[20,24,23],[26,38,35],[27,28,31],[29,34,36],[30,37,32]],
[[0,1,2,3,4,5,6,7,8,9,10,11,12],[13,14,15,16,17,18,19,20,21,22,23,24,25],[26,27,28,29,30,31,32,33,34,35,36,37,38]]
Block Intersection Formula 
{(2)^12 (3)^10 (4)^3 (6)^1 }^26 
Initial Blocks, modulo 13:
0 1 2 3 6 10 
0 1 2 4 7 9 

Design No 3 Group Size 156 5873D012 A83DF6FA
Group generators
Treatments are numbered first (invariants LAST therein), then blocks, then sub-blocks, if applicable, then replicates, if applicable
[[1,2,4,8,3,6,12,11,9,5,10,7],[13,38,24,34,16,31,23,32,25,36,20,26],[14,27,15,29,19,37,22,30,21,28,17,33],[18,35]],
[[0,1],[2,12],[3,11],[4,10],[5,9],[6,8],[13,24],[14,23],[15,22],[16,21],[17,20],[18,19],[26,32],[27,31],[28,30],[33,38],[34,37],[35,36]]
Block Intersection Formula 
{(0)^1 (2)^6 (3)^18 (6)^1 }^26 
Initial Blocks, modulo 13:
0 1 2 3 6 10 
0 1 3 5 7 8 

Design No 4 Group Size 39 A827959C F9FC0793
Group generators
Treatments are numbered first (invariants LAST therein), then blocks, then sub-blocks, if applicable, then replicates, if applicable
[[1,3,9],[2,6,5],[4,12,10],[7,8,11],[13,24,18],[15,17,23],[16,20,19],[21,22,25],[26,38,35],[27,28,31],[29,34,36],[30,37,32]],
[[0,1,4],[2,7,9],[3,10,5],[8,12,11],[13,25,22],[14,15,18],[16,21,23],[17,24,19],[27,29,35],[28,32,31],[30,38,36],[33,34,37]]
Block Intersection Formula 
{(2)^12 (3)^10 (4)^3 (6)^1 }^26 
Initial Blocks, modulo 13:
0 1 2 4 5 8 
0 1 2 4 7 9