Hey, yeah for sure you will find your own pattern. I should of said aswell that i don't even hum the 2,4,6&7 in my head just that accent pattern on the 1,3,5 but not actually playing those accents. Playing every note same sound. But isn't anything wrong with putting some accents in there, doesn't change it from being 7's :p
Just an exercise, main goal will bring about musicality, perhaps hit us up with a video doing 7's in a melody - even just 3 notes , for example i picked 2nd string (6th fret - F) to 2nd string (9th fret - Ab) then 3rd string (6th fret - Db). I like to make a metronome a drum track. SO many ways to practice man ha.