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

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

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

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

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