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

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

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

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

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