Match any sequence which repeats itself n times

Do you know how to match a group which repeats itself n times? eg:

This is is is is a test [incl. the spaces between two 'is'] [incl. the spaces between two 'is']
F oo bar
T elel ephone: +49 1 88 /123 45 45 45

I tried the following regex pattern: (w+)1+
but it only matches two occurences of a group (and not n occurences)

Thank you very much

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The problem with your pattern with respect to your sample input is that the pattern does not account for possible trailing spaces:

(w+s*)1+

Demo.

This is not universal, though: for example, this pattern will match "a ba ba ba ba b" as "a ba ba ba ba b", not as " a ba ba ba ba b ".

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