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

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

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

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

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