Renga predates haiku as a form of verse and uses a similar format with the addition of two seven-syllable lines forming a response.
For a while I'd been stumped trying to decide which of my haiku to offer to Greg.
In the lead-up to the recent poetry reading in Narrandera, I decided to share one I'd written for that event while camping by the Goulburn River:
Ripples reflecting
streaming autumnal light
each moment passing
On the mountain, clouds come in
it is like a ship at sea