*; the preceding item may occur zero or more.(0 / more)
+; match the preceding item one or more times.(1/more)
?; the preceding item may occur once or not at all.(0/1)
.;any thing except for newline.(anything but \n)
.*; will match any character, any number of times.(anything except newline)
nongreedy format:
.*?;
.+?
??
{m,n}?
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