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

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

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

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

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