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

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

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

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

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