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

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

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

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

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