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

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

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

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

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