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

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

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

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

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