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