[0,0,0,0,1,0,1,2,0,1,2,3,4,0,1,2,3,4,5,6,7,0,1,2, 3,4,5,6,7,8,9,10,11,12,0,1,2,3,4,5,6,7,8,9,10,11, 12,13,14,15,16,17,18,19,20,0,1,2,3,4,5,6,7,8,9,10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26, 27,28,29,30]