[Flex-help] Is it possible to search concurrent strings in flex ?

[최익성 <pn...@na...>]

Dear flex experts.
 
I have a question about lexical analysis.
 
Is it possible to find multiple string "abcd" and "bcd" concurrently in flex ?
 
Is it possible to find multiple string "abcd" and "cdef" concurrently in flex ?
 
If flex does not find them, is there any open tool which can find strings concurrently ?
 
Thank you very much.