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

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

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

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

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