[6t] t t t r r r r [6y] y y y t t [5t] t [4t] t t t r r r r [4y] y y y t t [3t] t [2t] t t t r r r r [3r] r r r r r r r [2e]--W-p s [0a] [0s] 0 0 0 [0s] [0s] [0a] [0a] 0 [0p] [0p] 0 [0p] [0s] [0s] [qa] [qs] q q q [qa] [qs] [qd] [qf] q [qg] [qd] q q q q [qf] q [qg] [qd] q q q [qd] [0f] [0g] [0f] [0g] [0f] [0d] [0s]a0 [9a]p p -W s s a [0a] [0s] 0 0 0 [0s] [0s] [0a] [0a] 0 [0p] [0p] 0 [0s] [0s] [0s] [qa] [qs] q q q q [qs] [qd] [qf] q [qg] [qd] q q q q [qh] q qg[qf] [qd] q q [qd] [0f] [0g] [0f] [0g] [0f]d0d[0s]a[0d]s [9p]--qjj j j [0j] 0h[0f] 0 0 0 0 0 0 0 0 0 0p[0j] [0j] [0j] [qj] qh[qg] q q q q q q q q q q q q [qg] [qf] [qg] [qf] [qg] [qf] [qg] q [qg] [0f] [0g] [0f] [0g] [0h] [0g] [0f] [0d] [9d]--W s - [ea] p 6 6 6 6 6 0 e