OBIBD(91,2730,90,3,2;2) based on subgroup (1,9,81,10,90,82) of U(Z91)
(14, 49; 35, 77; 42, 56), (24, 58; 33, 57; 34, 67), (23, 48; 25, 68; 43, 66), (57, 24; 58, 34; 67, 33), (37, 6; 60, 54; 85, 31), (12, 29; 17, 79; 62, 74), (15, 59; 32, 47; 44, 76), (10, 9; 82, 1; 90, 81), (8, 80; 11, 19; 72, 83), (6, 60; 31, 37; 54, 85), (7, 70; 21, 28; 63, 84), (5, 50; 41, 46; 45, 86), (3, 30; 27, 88; 61, 64), (4, 40; 36, 87; 51, 55), (1, 10; 9, 90; 81, 82), (2, 20; 18, 89; 71, 73), (16, 69; 22, 38; 53, 75), (13, 39; 26, 78; 52, 65), (28, 7; 70, 63; 84, 21), (20, 18; 73, 2; 89, 71), (19, 8; 80, 72; 83, 11), (40, 36; 55, 4; 87, 51), (39, 26; 65, 13; 78, 52), (38, 16; 69, 53; 75, 22), (30, 27; 64, 3; 88, 61), (29, 17; 74, 12; 79, 62), (48, 25; 66, 23; 68, 43), (49, 35; 56, 14; 77, 42), (47, 15; 59, 44; 76, 32), (46, 5; 50, 45; 86, 41) to be developed mod 91
OBIBD(133,5852,132,3,2;2) based on subgroup {1,11,121,12,122,132} of U(Z133)
( 8, 96; 37, 45; 88, 125) , ( 7, 84; 49, 56; 77, 126) , ( 6, 72; 61, 67; 66, 127) , ( 5, 60; 55, 128; 73, 78) , ( 67, 6; 72, 66; 127, 61) , ( 4, 48; 44, 129; 85, 89) , ( 3, 36; 33, 130; 97, 100) , ( 2, 24; 22, 131; 109, 111) , ( 15, 47; 32, 118; 86, 101) , ( 12, 11; 122, 1; 132, 121) , ( 9, 108; 25, 34; 99, 124) , ( 20, 107; 26, 46; 87, 113) , ( 14, 35; 21, 119; 98, 112) , ( 19, 95; 38, 57; 76, 114) , ( 18, 83; 50, 68; 65, 115) , ( 17, 71; 54, 116; 62, 79) , ( 10, 120; 13, 23; 110, 123) , ( 16, 59; 43, 117; 74, 90) , ( 24, 22; 111, 2; 131, 109) , ( 27, 58; 31, 106; 75, 102) , ( 23, 10; 120, 110; 123, 13) , ( 30, 94; 39, 69; 64, 103) , ( 28, 70; 42, 105; 63, 91) , ( 29, 82; 51, 80; 53, 104) , ( 36, 33; 100, 3; 130, 97) , ( 35, 21; 112, 14; 119, 98) , ( 1, 12; 11, 132; 121, 122) , ( 34, 9; 108, 99; 124, 25) , ( 40, 81; 41, 93; 52, 92) , ( 48, 44; 89, 4; 129, 85) , ( 47, 32; 101, 15; 118, 86) , ( 45, 8; 96, 88; 125, 37) , ( 46, 20; 107, 87; 113, 26) , ( 59, 43; 90, 16; 117, 74) , ( 60, 55; 78, 5; 128, 73) , ( 58, 31; 102, 27; 106, 75) , ( 57, 19; 95, 76; 114, 38) , ( 56, 7; 84, 77; 126, 49) , ( 71, 54; 79, 17; 116, 62) , ( 70, 42; 91, 28; 105, 63) , ( 69, 30; 94, 64; 103, 39) , ( 68, 18; 83, 65; 115, 50) , ( 81, 41; 92, 40; 93, 52) , ( 80, 29; 82, 53; 104, 51) to be developed mod 133.
OBIBD(91,2730,90,3,2;2) based on the Galois Ring (GF(7)⊕GF(13)).
((1,1),(3,4);(2,3),(6,12);(4,9),(5,10)), ((1,2),(3,8);(2,6),(6,11);(4,5),(5,7)), ((1,3),(3,12);(2,9),(6,10);(4,1),(5,4)), ((1,4),(3,3);(2,12),(6,9);(4,10),(5,1)), ((1,5),(3,7);(2,2),(6,8);(4,6),(5,11)), ((1,6),(3,11);(2,5),(6,7);(4,2),(5,8)), ((1,7),(3,2);(2,8),(6,6);(4,11),(5,5)), ((1,8),(3,6);(2,11),(6,5);(4,7),(5,2)), ((1,9),(3,10);(2,1),(6,4);(4,3),(5,12)), ((1,10),(3,1);(2,4),(6,3);(4,12),(5,9)), ((1,11),(3,5);(2,7),(6,2);(4,8),(5,6)), ((1,12),(3,9);(2,10),(6,1);(4,4),(5,3)), ((3,1),(2,4);(6,3),(4,12);(5,9),(1,10)), ((3,2),(2,8);(6,6),(4,11);(5,5),(1,7)), ((3,3),(2,12);(6,9),(4,10);(5,1),(1,4)), ((3,4),(2,3);(6,12),(4,9);(5,10),(1,1)), ((3,5),(2,7);(6,2),(4,8);(5,6),(1,11)), ((3,7),(2,2);(6,8),(4,6);(5,11),(1,5)), ((3,6),(2,11);(6,5),(4,7);(5,2),(1,8)), ((3,8),(2,6);(6,11),(4,5);(5,7),(1,2)), ((3,9),(2,10);(6,1),(4,4);(5,3),(1,12)), ((3,10),(2,1);(6,4),(4,3);(5,12),(1,9)), ((3,11),(2,5);(6,7),(4,2);(5,8),(1,6)), ((3,12),(2,9);(6,10),(4,1);(5,4),(1,3)), ((0,1),(0,4);(0,3),(0,12);(0,9),(0,10)), ((0,2),(0,8);(0,6),(0,11);(0,5),(0,7)), ((0,4),(0,3);(0,12),(0,9);(0,10),(0,1)), ((0,8),(0,6);(0,11),(0,5);(0,7),(0,2)), ((1,0),(3,0);(2,0),(6,0);(4,0),(5,0)), ((3,0),(2,0);(6,0),(4,0);(5,0),(1,0))