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

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

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

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

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