I have a one liner string that looks like this:

> 
> My db objects are db.main\_flow\_tbl, 'main\_flow\_audit\_tbl',
>  main\_request\_seq and MAIN\_SUBFLOW\_TBL.
> 
> 
> 

I want to use regular expressions to return database tables that start with **main** but do not contain words **audit** or **seq**, and irrespective of the case. So in the above example strings *main\_flow\_tbl* and *MAIN\_SUBFLOW\_TBL* shall return. Can someone help me with this please?