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

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

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

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

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