I strum it different ways when I play...sometimes i feel in that smooth mood so I strum it like....I can't describe it but other times, I'm feelin' reggae, so I strum it like a reggae song, haha I think I should just make a video...
and if you're not familiar with those chords use this site to find their tabs http://www.ukulele.nl/chordfinder.php
Pretty much, Bbmaj7=A#maj7 and Ebmaj7=D#maj7