( 0 2 9 5697 l( 1 2 4 4709 l( 3 0 8 3650 l( 5 2 7 2552 l( 7 0 3 1547 l( 9 -1 -1 788 l r ) r( 10 -1 -1 759 l r ) ) r( 8 0 7 1005 l( 15 -1 -1 868 l r ) r( 16 -1 -1 137 l r ) ) ) r( 6 0 3 1098 l( 19 -1 -1 808 l r ) r( 20 -1 -1 290 l r ) ) ) r( 4 0 8 1059 l( 23 -1 -1 950 l r ) r( 24 -1 -1 109 l r ) ) ) r( 2 -1 -1 988 l r ) )
5 20
