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

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

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

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

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