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

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

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

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

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