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

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

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

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

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