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

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

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

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

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