How about this:
Code:
Break ON
$asSearchStrings="B","E"
 
If Open(1,"inv.txt")
	"Cannot open file for reading ["+@ERROR+"] "+@SERROR+@CRLF
Else
	$sLine=ReadLine(1)
	While Not @ERROR
		$asLine=Split($sLine+"  ")
		If 1+AScan($asSearchStrings,$asLine[1])
			"Match: "+$asLine[1]+" First="+$asLine[0]+" Second="+$asLine[1]+" Third="+$asLine[2]+@CRLF
		EndIf
		$sLine=ReadLine(1)
	Loop
EndIf


Results:
Quote:

Match: B First=a Second=B Third=c
Match: E First=d Second=E Third=f
Match: E First=g Second=E Third=h