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

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

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

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

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