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

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

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

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

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