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

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

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

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

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