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

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

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

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

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