n30 1,6,21,24,29; 0,2,10,13,19; 1,3,8,17,26; 2,4,12,15,21; 3,5,10,25,28; 4,6,17,20,23; 0,5,7,12,27; 6,8,16,19,25; 2,7,9,14,23; 8,10,18,21,27; 1,4,9,11,16; 10,12,23,26,29; 3,6,11,13,18; 1,12,14,22,25; 8,13,15,20,29; 3,14,16,24,27; 7,10,15,17,22; 2,5,16,18,29; 9,12,17,19,24; 1,7,18,20,28; 5,14,19,21,26; 0,3,9,20,22; 13,16,21,23,28; 5,8,11,22,24; 0,15,18,23,25; 4,7,13,24,26; 2,11,20,25,27; 6,9,15,26,28; 4,19,22,27,29; 0,11,14,17,28.