( 0 2 4 15054 l( 1 0 3 11592 l( 3 0 8 7864 l( 5 2 9 4564 l( 7 2 7 2610 l( 9 -1 -1 1167 l r ) r( 10 -1 -1 1443 l r ) ) r( 8 -1 -1 1954 l r ) ) r( 6 0 7 3300 l( 17 -1 -1 2105 l r ) r( 18 -1 -1 1195 l r ) ) ) r( 4 -1 -1 3728 l r ) ) r( 2 -1 -1 3462 l r ) )
5 20
