[2,3,2,4,5,2,3,4,6,7,2,4,6,8,3,6,9,2,4,5,6,8,10,11,2,3,4,6,8,9,10,12,13,2,4,6,7,8,10,12,14,3,5,6,9,10,12,15,2,4,6,8,10,12,14,16,17,2,3,4,6,8,9,10,12,14,15,16,18,19,2,4,5,6,8,10,12,14,15,16,18,20,3,6,7,9,12,14,15]
