[2,1,4,1,4,3,4,1,1,3,2,21,24,21,24,23,24,21,21,23, 42,421,424,421,424,423,424,421,421,423,12,121,124, 121,124,123,124,121,121,123,42,421,424,421,424, 423,424,421,421,423,32,321,324,321,324,323,324, 321,321,323,42]