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

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

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

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

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