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

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

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

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

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