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