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

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

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

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

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