A lai consists of stanzas with nine lines each (although some versions do not require a specific number of lines per stanza). The pattern of syllables per line is 5,5,2,5,5,2,5,5,2 and the rhyme scheme for each stanza is aabaabaab. There is no set number of stanzas and the stanzas are not linked to each other in terms of rhyme. Put all this together and you’ll get something like this:

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Gaze across the land
Heath, still water, sand
The bay.
Would you call it grand
If within my hand
It lay?
All at my command
For the final stand
Today.

Nights grow long and dire
Those who call me sire
Amass.
Purposes grow higher
Dare I start to tire?
The grass –
Swept across with fire
Vast, uncaring pyre
Alas!