Quantifier
Matches
*
Matches zero or more occurrences of the preceding pattern.
+
Matches one or more occurrences of the preceding pattern.
?
Matches zero or one occurrences of the preceding pattern.
{n}
Matches exactly n occurrences of the preceding pattern.
{n,}
Matches at least n occurrences of the preceding pattern.
{n,m}
Matches between n and m (inclusive) occurrences of the preceding pattern.
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