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

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

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

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

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