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

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

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

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

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