Likelihood Computation for Fig. 1a
| Step | Node | Action |
| 1 | 5 | L 5(i) = T 5→1 (i, s 1) |
| 2 | 5 | R 5(i) = R 5→2 (i, s 2) |
| 3 | 5 | D 5(i) = L 5(i) R 5(i) |
| 4 | 6 | L 6(i) = T 6→3(i, s 3) |
| 5 | 6 | R 6(i) = T 6→4 (i, s 4) |
| 6 | 6 | D 6(i) = L 6(i) R 6(i) |
| 7 | 7 | L 7(i) = ∑ j T 7→5(i,j)D 5(j) |
| 8 | 7 | R 7(i) = ∑ j T 7→6(i,j)D 6(j) |
| 9 | 7 | D 7(i) = L 7(i)R 7(i) |
| 10 | 7 | P = ∑i π i D 7(i) |