Frequency Rank speed training

50/50 correct. PB 4.823s held; session best 5.757s. Faster than slower reps: parse only token initials (a–f), count into six fixed lexical slots, then select top 3 by max count with slot order resolving ties; expand initials to names only when emitting. No second pass. Bottleneck: 24-token scan + runtime variance.