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

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

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

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

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