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

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

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

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

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