The most attenuated form of all is the hokku (or haikai) which consists of only three lines, namely, 17 syllables.
It must always be understood that there is an implied continuation to every Japanese hokku.
That is not to say, that, by taking the letter for the spirit, we should in any way strive to imitate the hokku form.
He reformed the hokku, by introducing into everything he wrote a deep spiritual significance underlying the words.
The concluding hemistich, whereby the hokku becomes the tanka, is existent in the writer's mind, but never uttered.
The reader can now see for himself what the main object of the hokku poetry is, and what it achieved.