regex to match repeated consonant

Question

How can I detect with a regex expression if the same consonant is repeated three times or more?

My idea is to match words like tttoo

Answer 1

There may be shortcuts in certain regex libraries but you can always...

b{3,}|c{3,}|d{3,}...

Some libs for example let you match using a back reference which may be a tad cleaner...

(bcd...)\1{2,}