Modifier Description
* Match zero or more occurrences of the preceding character, and match as many as possible.
+ Match one or more occurrences of the preceding character, and match as many as possible.
*? Match zero or more occurrences of the preceding character, and match as few as possible.
+? Match one or more occurrences of the preceding character, and match as few as possible.
? Match either one or none of the preceding character.
{x} Match x occurrences of the preceding character.
{x,y} Match at least x occurrences and at most y occurrences.