(0 21 16)(1 5 3)(2 20 18)(4 15 13 10 6)(7 19 17 14 11)(8 12 9)
ALLOWS (11/8)-SEQUENCE
1: (0 7 16)

(0)(1 5 3)(2 20 18)(4 15 13 10 6)(7 21 16 19 17 14 11)(8 12 9)
2: (11 16 19)

(0)(1 5 3)(2 20 18)(4 15 13 10 6)(7 21 16)(8 12 9)(11 17 14)(19)
3: (2 20 18)

(0)(1 5 3)(2)(4 15 13 10 6)(7 21 16)(8 12 9)(11 17 14)(18)(19)(20)
4: (6 13 10)

(0)(1 5 3)(2)(4 15 13)(6)(7 21 16)(8 12 9)(10)(11 17 14)(18)(19)(20)