A bug is not big.
But the slug can help the bug.
The bug and the slug can tug the mug to a rug.
 
A slug is not big.
But the bug can help the slug.
The slug and the bug can tug the jug to a rug.
 
Tug, slug! Tug, bug!
Tug the jug to the rug.
Now the slug can get snug on the jug on the rug.
 
Tug, bug! Tug, slug!
Tug the mug to the rug.
Now the bug can get snug in the mug on the rug.