Envelope patterns and alliteration

From LitWiki

Envelope Patterns and Alliteration

Alliterationis defined as follows by the American Heritage Dictionary: the repetition of the same sounds or of the same kinds of sounds at the beginning of words or in stressed syllables, as in “on scrolls of silver snowy sentences” (Hart Crane). Modern alliteration is predominantly consonantal; certain literary traditions, such as Old English verse, also alliterate using vowel sounds.