| Count | Prefix |
|---|---|
| 63 | zz- |
| 15 | zz. |
| 5 | zz0 |
| 21 | zz1 |
| 9 | zz2 |
| 19 | zz3 |
| 7 | zz4 |
| 4 | zz5 |
| 8 | zz6 |
| 4 | zz7 |
| 4 | zz8 |
| 14 | zz9 |
| 170 | zza |
| 95 | zzb |
| 103 | zzc |
| 76 | zzd |
| 80 | zze |
| 55 | zzf |
| 60 | zzg |
| 89 | zzh |
| 128 | zzi |
| 70 | zzj |
| 42 | zzk |
| 68 | zzl |
| 75 | zzm |
| 39 | zzn |
| 114 | zzo |
| 85 | zzp |
| 23 | zzq |
| 55 | zzr |
| 112 | zzs |
| 99 | zzt |
| 45 | zzu |
| 20 | zzv |
| 56 | zzw |
| 69 | zzx |
| 96 | zzy |
| 285 | zzz |