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

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

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

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

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