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

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

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

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

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