n72 1,2,3,4,5,6,7,8; 0,9,10,11,12,13,14,15; 0,7,8,9,16,17,18,19; 0,10,16,20,21,22,23,24; 0,11,17,20,25,26,27,28; 0,12,18,21,25,29,30,31; 0,13,19,22,26,29,32,33; 0,2,8,14,23,27,30,32; 0,2,7,15,24,28,31,33; 1,2,32,33,34,35,36,37; 1,3,34,42,48,51,53,55; 1,4,35,38,42,45,46,47; 1,5,36,39,45,48,49,50; 1,6,37,38,39,52,54,55; 1,7,19,33,46,49,51,52; 1,8,19,32,47,50,53,54; 2,3,23,24,35,45,48,56; 2,4,30,31,34,38,55,56; 2,5,27,28,37,38,45,57; 2,6,14,15,36,48,55,57; 3,4,39,45,55,57,58,59; 3,5,34,35,38,39,40,41; 3,6,38,42,56,57,60,61; 3,7,16,24,40,51,58,60; 3,8,16,23,41,53,59,61; 4,5,35,36,56,57,62,63; 4,6,34,36,39,42,43,44; 4,7,18,31,43,46,58,62; 4,8,18,30,44,47,59,63; 5,6,34,37,48,56,64,65; 5,7,17,28,40,49,62,64; 5,8,17,27,41,50,63,65; 6,7,9,15,43,52,60,64; 6,8,9,14,44,54,61,65; 9,10,17,21,26,29,64,65; 9,11,16,21,25,60,61,66; 9,12,19,25,26,52,54,67; 9,13,18,29,43,44,66,67; 11,13,17,18,21,22,62,63; 12,13,20,21,26,66,70,71; 21,23,30,56,61,63,65,70; 21,24,31,56,60,62,64,71; 10,11,22,26,66,67,68,69; 26,27,32,37,54,65,68,70; 26,28,33,37,52,64,69,71; 11,12,16,18,20,58,59,67; 11,14,27,57,59,61,63,68; 11,15,28,57,58,60,62,69; 10,12,16,19,29,51,53,66; 12,14,30,53,54,55,59,70; 12,15,31,51,52,55,58,71; 10,14,23,48,50,53,65,68; 13,14,32,36,44,50,63,70; 10,15,24,48,49,51,64,69; 13,15,33,36,43,49,62,71; 10,13,17,19,20,49,50,67; 16,17,22,25,29,40,41,67; 18,19,20,22,25,46,47,66; 20,23,27,45,47,50,59,70; 20,24,28,45,46,49,58,71; 22,23,32,35,41,47,63,68; 22,24,33,35,40,46,62,69; 25,27,30,38,41,47,54,61; 25,28,31,38,40,46,52,60; 29,30,32,34,41,44,53,65; 29,31,33,34,40,43,51,64; 35,37,39,42,48,57,68,69; 36,37,42,45,55,56,70,71; 42,43,46,51,60,66,69,71; 42,44,47,53,61,66,68,70; 39,40,43,49,52,58,67,69; 39,41,44,50,54,59,67,68.