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

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

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

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

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