(0 21 2)(1 9 7)(3 18 8 6 4)(5 12 10)(11 15 13)(14 19 16)(17 22 20)
ALLOWS (11/8)-SEQUENCE
1: (1 9 11)

(0 21 2)(1 15 13 11 7)(3 18 8 6 4)(5 12 10)(9)(14 19 16)(17 22 20)
2: (5 12 10)

(0 21 2)(1 15 13 11 7)(3 18 8 6 4)(5)(9)(10)(12)(14 19 16)(17 22 20)
3: (3 18 8)

(0 21 2)(1 15 13 11 7)(3 6 4)(5)(8)(9)(10)(12)(14 19 16)(17 22 20)(18)
4: (7 13 11)

(0 21 2)(1 15 13)(3 6 4)(5)(7)(8)(9)(10)(11)(12)(14 19 16)(17 22 20)(18)