(0 18 16 13 2)(1 5 3)(4 8 6)(7 20 15 12 9)(10 14 11)(17 21 19)
ALLOWS (11/8)-SEQUENCE
1: (0 8 16)
(0 13 2)(1 5 3)(4 8 18 16 6)(7 20 15 12 9)(10 14 11)(17 21 19)
2: (7 20 15)
(0 13 2)(1 5 3)(4 8 18 16 6)(7 12 9)(10 14 11)(15)(17 21 19)(20)
3: (4 8 18)
(0 13 2)(1 5 3)(4 16 6)(7 12 9)(8)(10 14 11)(15)(17 21 19)(18)(20)
4: (17 21 19)
(0 13 2)(1 5 3)(4 16 6)(7 12 9)(8)(10 14 11)(15)(17)(18)(19)(20)(21)