1: main 2: 0 one 3: 0 1 four 4: 0 1 three one... 5: 0 1 2 seven 6: 0 1 2 three... 7: 0 1 2 8: 0 three 9: 0 1 one 10: 0 1 2 four 11: 0 1 2 three... 12: 0 1 seven 13: 0 1 three... 14: 0 two 15: 0 1 four 16: 0 1 six 17: 0 1 two...