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

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

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

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

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