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For example the word "hello" has the letter "l" appearing twice in a row. Are there any letters that never appear twice in a row?

Edit for clarification: I'm asking whether or not every letter in the english alphabet appears next to itself in some word.


A - Aardvark

B - Babbling

C - Eccentric

D - Forbidden

E - Keen

F - Buff

G - Bugged

H - ??

I - Hawaii

J - ?? etc.

Is there a website or anything that would have a list like this?

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closed as off topic by John Lawler, Mahnax, JLG, Mitch, simchona Jun 21 '12 at 22:34

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There's something not quite right with this question, please take a look and take action; you could even delete it before others do this. –  user19148 Jun 21 '12 at 22:16
Updated the question. –  Wallace Brown Jun 21 '12 at 22:26
For H, withheld would work. –  JLG Jun 21 '12 at 22:29

1 Answer 1

Q and X are the only letters that never appear together in a word

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Because I don't want to think too hard about it, what about U and W and Y? –  JLG Jun 21 '12 at 22:27
Muumuu has two Us in a row, twice. –  Mahnax Jun 21 '12 at 22:28
W = glowworm Y = sayyid –  AndyPerfect Jun 21 '12 at 22:30
@PeterShor, Of course, vacuum! –  JLG Jun 21 '12 at 22:34
Wiktionary gives XXXed as the past form of the verb to XXX. –  Henry Jun 22 '12 at 0:39

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