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

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

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

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

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