"6--" 1 2 3 4 12 13 "0--" "3--" 7 14 15 "2--" 15 29 "1--" 16 "2--" 20 29 "1--" 22 "0--" "2--" 7 15 "2--" "4--" 16 22 24 26 "2--" 13 29