The form below is called a Renga. The breaks show the different line requirements and syllable counts. More info can be found at tankatuesday.com.
Contrast the hint of
flowers with the attack of
weeds. Balance of Spring.
Hints of summer in sunlight
humidity, light and heat.
Then cool like the fall.
Leaves hush instead of rustle,
No hint of winter
Once bare trees are blossoming
Nature's first green is golden.
Mark Bozeman 
OK… so here’s the instructions: Here’s my hokku:
an empty attic
the sound of April showers
thunderous rumblings
Now, you write the next two 7 syllable lines
THEN, you write a new hokku
I’ll add the two 7 syllable lines to your hokku in the comments of your post. 🙌
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