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

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

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

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

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