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

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

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

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

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