#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?m)\b(?=(?:[a-zA-Z]\d+[a-zA-Z]*)|(?:\d+[a-zA-Z]\d*))[a-zA-Z0-9]*"
Local $sString = "1921 abc abc abc 1k" & @CRLF & _
"" & @CRLF & _
"4320 abcs abc Apt 201b" & @CRLF & _
"" & @CRLF & _
"1250 abcd Ave Apt 3c" & @CRLF & _
"" & @CRLF & _
"61a abcd Ave" & @CRLF & _
"" & @CRLF & _
"1b abcd Ave" & @CRLF & _
"" & @CRLF & _
"39r abcd Rd" & @CRLF & _
"" & @CRLF & _
"16w750 abcd Ave" & @CRLF & _
"" & @CRLF & _
"a123def"
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH)
Local $aFullArray[0]
For $i = 0 To UBound($aArray) -1
_ArrayConcatenate($aFullArray, $aArray[$i])
Next
$aArray = $aFullArray
; Present the entire match result
_ArrayDisplay($aArray, "Result")
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm