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

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

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

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

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