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

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

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

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

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