It is easy to accidentally type a word twice and not notice it, particularly if the word is a short one.

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Homophones | Repetitions | Grammar and miscellaneous

For machines – machine-readable version (condensed)

format:

• misspelling (click for Wikipedia search); (correct spelling)

Absolute duplicates

• a a
• about about (about)
• above above (above)
• across across (across)
• after after (after)
• against against (against)
• all all (all)
• along along (along)
• also also (also)
• an an (an, and an)
• and and (and, and an)
• any any (and any, any)
• are are (are)
• around around (around)
• as as (as, as a)
• at at (at, at a)
• back back (back)
• be be (be)
• became became (became)
• because because (because)
• become become (become)
• been been (been)
• before before (before)
• behind behind (behind)
• being being (being)
• below below (below)
• between between (between)
• both both (both)
• but but (but)
• by by (by)
• could could (could)
• during during (during)
• each each (each)
• every every (every)
• first first (first - but many false positives, for example "the first First Lady to...", "the first First Minister" etc.)
• for for (for)
• from from (from)
• had had (many false positives; may be correct, see pluperfect. "He had had some juice already".)
• has has (has, has had)
• have have (have)
• having having (having)
• he he
• held held
• her her
• his his
• if if (if, if it)
• in in (in, in an, but many false positives; moved in in September)
• include include (include)
• included included (included)
• including including (including)
• includes includes (includes)
• into into (into)
• is is (is, it is, but some false positives)
• it it (usually 'it is', but occasional false positives; "Was it it that did that?")
• its its (is its, its)
• last last (last)
• most most (most)
• of of (of, off of)
• off off
• on on
• only only (only, only on)
• or or (many false positives; generally one of the "or"s is not the conjunction)
• over over (of over, over)
• part part (part)
• place place (place)
• played played (played)
• she she (she)
• should should (should)
• since since (since)
• some some (some)
• still still (still)
• such such (such)
• than than (than)
• that that (many false positives; may be correct. "She knew that that was the case.")
• the the
• their their (their)
• them them (them)
• then then (then)
• there there (there)
• these these (these, these theses)
• they they (they)
• this this (this)
• those those (those)
• through through (through)
• to to (to, to the)
• under under (under)
• until until (until)
• up to up to (up to)
• was was (was)
• we we (we)
• were were (were)
• when when (when)
• where where (where, where there)
• whether whether (whether)
• which which (which, with which)
• while while (while)
• who who (who)
• whom whom (whom)
• whose whose (whose)
• will will (will)
• with with (with, with which)
• would would (would)

Near duplicates

• a an
• a the
• an a
• an and
• the this

Other strange couples

• are been
• was been

The following is a list of the 172 most common word duplicates (number after word is count of occurrences) extracted from a search of all English Wikipedia articles existing on 21 February 2006.

Most punctuation was automatically removed and so the count is unlikely to be 100% accurate. The count of single letter words is likely to be significantly affected by markup/punctuation removal and these have not been included on the list.

Some of these words occur in a context where duplication is intended, such as for emphasis: please please, blah blah, yadda yadda, very very; where the scientific name of an animal coincides with the common name: Gorilla gorilla, Homo sapiens sapiens; where the genus and subgenus have the same name: Octopus Octopus; or even part of the name, for example: Pago Pago, Dum Dum, Duran Duran, Wagga Wagga, Walla Walla, Chitty Chitty Bang Bang; or a town or city in a county, state or country of the same name: Oxford, Oxfordshire, Cambridge, Cambridgeshire, Luxembourg, Luxembourg.

The following is a list of the 100 most common word pair duplicates (number after word is count of occurrences) extracted from a search of all English Wikipedia articles existing on 21 February 2006.