[0,3,4,5,6,7,6,7,8,9,8,9,10,9,10,11,10,11,12,11, 12,13,12,13,12,13,14,13,14,15,14,15,14,15,16,15, 16,15,16,17,16,17,16,17,18,17,18,17,18,19,18,19, 18,19,18,19,20,19,20,19,20,21,20,21,20,21,20,21, 22,21,22,21,22]