Flat and flat (the last word is flat and flat, called flat and flat feet);
Flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat;
Flat and flat (the last word is awkward, called awkward feet);
Flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat.
These four sentence patterns are the basis of the change of the flat and flat format of the regular poem, and constitute the four basic formats of the seven-character regular poem.
The first format
Change the first sentence to rhyme.
Flat and light, flat and light.
Flat and light, flat and light.
Plain, plain, plain.
Flat and light, flat and light.
Description: 0 means even number or even number.
The second format
Stand up. The first sentence doesn't rhyme.
Plain, plain, plain.
Flat and light, flat and light.
Plain, plain, plain.
Flat and light, flat and light.
The third format
Rhyme the first sentence.
Flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat flat.
Plain, plain, plain.
Flat and light, flat and light.
Plain, plain, plain.
The fourth format
The first sentence doesn't rhyme
Flat and light, flat and light.
Plain, plain, plain.
Flat and light, flat and light.
Plain, plain, plain.