Bigram & Trigram Trainer
Whole-word practice builds general speed, but a specific, smaller pattern is usually what actually caps how fast you can type: the two- and three-letter combinations, called bigrams and trigrams, that appear over and over inside English words. Sequences like th, er, in, ing, and tion show up so often that how quickly your fingers execute them, as a single fluid motion rather than two or three separate presses, has an outsized effect on your overall words-per-minute.
This is the same idea behind practicing scales on a musical instrument. You already know the individual notes; what you're building is the transition between them. Typing a bigram fast isn't really about typing two letters quickly, it's about training your fingers to start moving toward the second letter before the first one has even finished, so the pair happens as one motion instead of two hesitant ones.
Choose bigrams for two-letter pairs or trigrams for three-letter combinations, and the drill below will string together a random sequence of the most frequent ones in English. Your WPM and accuracy are tracked and saved the same way as KeysInFlow's other tools, so you can see whether repeated practice on these specific combinations moves your overall typing speed.
Drill combinations
Choose a combo length, then start typing.
0
WPM
0
Accuracy
0
Time
0
Errors
Results
0
WPM
0
Accuracy
0
Time
0
Errors
Why combos matter more than single letters
Most typing plateaus aren't caused by one weak finger, they're caused by a handful of awkward transitions: reaching from the left index finger to the right index finger for "th," or rolling three fingers in sequence for "ing." Drilling these directly, in isolation from the rest of a sentence, removes the cognitive load of reading and lets your hands focus purely on the motion. Come back to this drill every few days rather than in one long session; short, repeated exposure builds the automatic reflex faster than a single marathon attempt.