Hand-Alternation Bigram Drill
th he it to of an is or el ake
Every passage contains: th he it to of an is or el ak
QWERTY layout assumed. Backspace corrects; uncorrected errors count against net WPM.
"th", "he", "it", "to", "of", "an", "is", "or", "el", and "ak" all split across the two hands: whichever finger types the first letter, the second belongs to the opposite hand entirely. That's a different situation from every other bigram drill in this batch, where both letters stay within one hand's reach no matter how the fingers or rows are arranged.
Crossing hands removes a layer of physical connection that even the fastest same-hand sequences still carry. The Adjacent-Finger Roll Drill gets real overlap from two neighbouring fingers, but those two fingers are still attached to the same wrist and the same forearm muscles, which places some shared limit on both of them at once. Two hands share no skeleton and no tendon sheath at all — the left hand finishing "t" and the right hand starting "h" are, mechanically, two completely independent events that simply happen to be timed close together.
Why This Drill
Three of these ten pairs — "th", "he", and "an" — also appear among the ten most frequent bigrams the Common Bigram Drill targets, but the other seven are here for a different reason: not because they're among the single most common two-letter sequences in English, but because each one happens to split cleanly across both hands regardless of how frequent it is.
Because nothing here waits on anything else, this drill is closer to a ceiling than an average. Ordinary prose constantly mixes in same-hand pairs, same-finger pairs, and row jumps that this drill deliberately excludes, so your speed here will usually sit above your speed on a normal passage — the gap between the two is a reasonable estimate of how much headroom exists between your hands' raw motor capability and what your typing currently delivers on ordinary text.
Using that gap productively means treating this drill's number as a reference point rather than a target to sustain everywhere. A typist whose ordinary-passage speed sits close to their hand-alternation speed is already getting most of what their hands are physically capable of out of real text; a typist with a wide gap has more to gain from the other drills in this batch than from repeating this one.
Two Separate Motor Systems, Not One Hand Sharing a Job
A roll still asks one wrist to support two fingers taking turns, which means the wrist's own position at any instant has some small, shared influence over both of them. Hand alternation has no such shared structure — the left hand and the right hand each have their own independent nerve pathways, their own wrist, and their own set of muscles, so one hand finishing a keystroke places no physical constraint on what the other is doing at the same moment. That's the specific property this drill isolates, and no same-hand sequence, however fast, can fully match it.
Why "th", "he", and "it" Keep Showing Up in the Busiest Words
"th", "he", "it", "to", "of", "an", "is", "or", and "el" aren't on this list because someone hand-picked frequent pairs; they're on it because T and H, H and E, I and T, and the rest each happen to sit on opposite hands under the standard finger assignment. Whether that's a useful accident of where QWERTY put its letters or simply how English spelling happened to fall against an arbitrary layout is a question the Keyboard Layouts Explained guide goes into — historians don't fully agree on why QWERTY's letters ended up where they did, so it's worth treating this as an observed effect of the layout rather than evidence of a deliberate design choice.
Reading This Drill's Speed as a Ceiling, Not a Target
Because every pair here overlaps completely, your best speed on this drill is close to the fastest your hands can physically alternate keystrokes, independent of vocabulary or sentence structure. That number isn't meant to be matched on a full paragraph, which will always mix in slower sequence types — it's meant to be compared against your normal typing speed, so you know how much of the gap between the two is coming from your hands' physical limits versus from everything else a real sentence asks of you.
Frequently Asked Questions
Why is this the fastest bigram drill on the site, faster even than the Adjacent-Finger Roll Drill?
Two full hands are more independent than two fingers sharing one wrist. A roll overlaps two fingers that still answer to the same forearm; hand alternation overlaps two hands that share no physical structure at all.
Why do some of these pairs also appear in the Common Bigram Drill?
That drill selects its ten pairs by raw frequency in English. This one selects by which hand each letter falls on. "th", "he", and "an" happen to satisfy both criteria at once; the rest of this drill's set only satisfies the hand-alternation one.
Should my everyday typing speed match my speed on this drill?
No — ordinary prose constantly mixes in same-hand and same-finger pairs that this drill deliberately excludes, so treat this number as a ceiling your hands are capable of reaching, not an average they should sustain on real text.
Does it matter which hand goes first in a pair like "he" versus "eh"?
Not for the cross-hand benefit — H is a right-hand key and E is a left-hand key either way, so the pair alternates hands regardless of which order the two letters come in. Only the muscle sequence, not the overlap itself, changes with the order.
Why does QWERTY happen to put so many common pairs on opposite hands?
It isn't fully settled why QWERTY's letters ended up in their current positions, so it's safer to treat the hand split on pairs like "th" and "an" as an effect of the layout rather than proof it was arranged with typing speed in mind.