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

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

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

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

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