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

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

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

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

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