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