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

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

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

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

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