Actually its enough if the value satisfies..REG_EXP of
^([[:alpha:]]+[.]? )+(#|# |NO |NO. )?[[:digit:]]
But since it takes much time ...I thought of adding (A){0,1}...wich obviously does not make any difference...
I just need the equivalent of ^([[:alpha:]]+[.]? )+(#|# |NO |NO. )?[[:digit:]]
which works faster....