Design No 1 Group Size 72 8B6DA5B6 B4954FF3
Group generators (treatments are numbered 0..00, 0..01,...,0..10,...,1..11)
Treatments are numbered first (invariants LAST therein), then blocks, then sub-blocks, if applicable, then replicates, if applicable
[[3,6],[4,7],[5,8],[10,16],[11,17],[12,18],[19,25],[20,26],[21,27]],
[[1,2],[4,5],[7,8],[10,12],[13,15],[16,18],[19,21],[22,24],[25,27]],
[[1,3],[2,6],[5,7],[11,13],[12,16],[15,17],[20,22],[21,25],[24,26]],
[[0,1],[3,4],[6,7],[11,12],[14,15],[17,18],[20,21],[23,24],[26,27]]
Block Intersection Formula 
{(2)^12 (3)^4 (4)^1 (5)^1 }^18 
Initial Blocks, modulo 3^2:
1000 00 01 10 11 
00 01 10 11 22