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