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

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

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

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

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