A hard object as a stone (om-) bounces off something.
om- meltat, omin- mineltat
Mineltat bato, ki nainaho dyaken.
The stone bounced off (something) and hit onto me.
Someone bounces a hard object (pa--en) off of something.
pa--en paltaten
Paltaten ko bato do kabatwan, ki makchid.
I bounce the stone off the rocks, and it splits.