First, hide your head.
Second, rhyme.
One, two, four homophonic words are at the end of the sentence. One, two, four, four, three, homophonic words are not needed.
For example:
Tibetan, ask questions, look at words and combine words.
At first, the head is a word of righteousness and harmony.
No demand's three-tone pair
Just ask one, two or four acquaintances.
This standard is controversial and not mandatory. Even so, if it deviates too much from this standard, it is not poetry. What about Tibetan poems? This is just a word game. So I think it is necessary to strive to reach or approach this standard.