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

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

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

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

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