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

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

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

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

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