(0 19 2 20 3)(1 17 15)(4 16 14)(5 13 11 9 6)(7 10 8)(12 21 18)
ALLOWS (11/8)-SEQUENCE
1: (0 1 2)

(0 20 3)(1 19 2 17 15)(4 16 14)(5 13 11 9 6)(7 10 8)(12 21 18)
2: (2 17 19)

(0 20 3)(1 19 15)(2)(4 16 14)(5 13 11 9 6)(7 10 8)(12 21 18)(17)
3: (12 21 18)

(0 20 3)(1 19 15)(2)(4 16 14)(5 13 11 9 6)(7 10 8)(12)(17)(18)(21)
4: (0 20 3)

(0)(1 19 15)(2)(3)(4 16 14)(5 13 11 9 6)(7 10 8)(12)(17)(18)(20)(21)