Final answer:
The rhyme scheme of the excerpt from 'An Irish Airman Foresees His Death' is not provided but can be deduced from the patterns described in similar examples.
Step-by-step explanation:
The rhyme scheme of the excerpt from An Irish Airman Foresees His Death is not explicitly given in the information provided. However, based on the stated patterns and examples of other poems, we can deduce the rhyme scheme. For instance, the Keats poem is described with a complex pattern as 'a b a b b c b c c,' indicating a sophisticated interlocking pattern. In contrast, a basic quatrain often follows patterns such as 'AABB,' 'ABBA,' 'AABA,' and 'ABCB.' Additionally, it's mentioned that tercets follow an interlocking scheme such as 'ABA,' 'BCB,' 'CDC.' Given this information, we should look for repeating sounds and rhymes that align with what is described to determine the rhyme scheme of the Yeats poem.