1, bars 2 and 4 must rhyme, and the third bar does not rhyme. You can also pay attention to: 1, 3, 5, whatever, 2, 4, 6, and define the rules.
Example:
First, "sing the goose"
Luo
Goose, goose, goose
Your neck sings to the sky in joy.
White feathers float on the green water.
Anthurium dial Shiba Inu
Second, "The Bird House"
The white sun sets behind the mountain.
And oceans drain the golden river.
In order to take in everything at a glance
Walk up a flight of stairs