                [10] - up and down landing differently
                / X     can't go back up from 9 to 1-10
           [36][8][9]    +35/36
             \ /    \
             [7]   [11]
              \     /
              [6] [12]-[13]
                \       | 
                [5]    [14]
[1]-[2]-[3]-[4]./       \ 
      \                [15]
      [35]              /
                      [16] 
                       / \
                     [17][18]
                      /    \
                    [19]  [20]
                   /         \
             [25]-[21]      [22]
                   \          \
                   [23]      [24]
                     \        /     
                     [26]    [27]  [34]
                      /       |     |
                     [28]   [29]  [33]
                       \           /
                       [30]-[31]-[32]
