regex - Sequence in regular expression -

regex - Sequence in regular expression -

how can write regular look meets next requirements: 1) must 1 sequence 7 digits 2) edd or final word somewhere

this should trick :

#[0-9]{7}(edd|final)?# //edd or final optional

or

#[0-9]{7}(edd|final)+# //if edd or final must there

regex