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

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

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

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

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