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

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

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

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

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