Regular Expressions 101

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/
a?m(ou?|[ie])n?g(st)? ?us|(when ?the ?impost[oe]r ?is ?)?sus(picio(us|n)|pect)?|impost[oe]r|\u0D9E|(?<=[\x20-\x7E]\b)( was( not)? the impost[oe]r| was ejected)|\w+ impost[oe]rs? remains?|emergency meeting|dead body reported
/
gmiu
All the errors detected are listed below, from left to right, as they appear in the pattern.
? The preceding token is not quantifiable
Your regular expression does not match the subject string.

Regular Expression
No Match

/
/
gmiu

Test String