In which line from “kubla khan” is alliteration the dominant sound device?

No choices were given so I had to read the whole poem. Here is the line that uses alliteration.

Five miles meandering with a mazy motion 

Alliteration is literary stylistic device wherein a series of words in a row have the same first consonant sounds.

The sound of "M" was used to depict alliteration.

Can you provide the excerpt ?