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

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

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

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

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