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

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

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

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

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