(0 19 2)(1 7 3)(4 17 16)(5 11 9)(6 14 8)(10 18 12)(13 20 15)
ALLOWS (11/8)-SEQUENCE
1: (1 7 10)

(0 19 2)(1 18 12 10 3)(4 17 16)(5 11 9)(6 14 8)(7)(13 20 15)
2: (6 14 8)

(0 19 2)(1 18 12 10 3)(4 17 16)(5 11 9)(6)(7)(8)(13 20 15)(14)
3: (1 18 12)

(0 19 2)(1 10 3)(4 17 16)(5 11 9)(6)(7)(8)(12)(13 20 15)(14)(18)
4: (13 20 15)

(0 19 2)(1 10 3)(4 17 16)(5 11 9)(6)(7)(8)(12)(13)(14)(15)(18)(20)