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

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

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

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

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