The basic form of ha-i ku is an "amusing sentence" that follows the three-line, 5-7-5 form. Note, it must be a sentence, not several. There are more constraints, depending on school of thought and whom you ask. Popular constraints:
- Must have to do with nature
- Must have to do with a season
- If using the above constraints, you must introduce that element in the first line of the poem.
.oO all things connect through the motion of the mind