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

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

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

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

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