The Haiku has very simple rules:
1)use no more than 17 syllables
2)arrange them in 5-7-5 syllable form
3)avoid similies and metaphores
4)try to retain Japanese value
Here are four samples of Basho:
frog jumps in
I lie awake
this icy nite
Stabs the darkness.
sick on a journey
over parched fields
dreams wander on.
These were just a few of the many poems available. To see what I mean just CLICK.