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

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

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

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

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