split 0 0 1 2
split 0 1 3 4
#
split 5 0 6 7
split 5 2 8 9
#
split 10 0 1 2
split 11 2 8 9
#
split 12 0 1 2
split 13 0 1 2
split 14 0 6 7
split 15 0 6 7