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

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

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

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

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