Is there alliteration in shakespeare sonnet 42?

Yes, Shakespeare's Sonnet 42 includes several instances of alliteration, which is the repetition of consonant sounds at the beginning of words or stressed syllables:

1. "When most I wink, then do mine eyes best see" (line 1)

2. "And yet this time remov'd, was summer's time" (line 4)

3. "And that I get a happiness by those" (line 9)

4. "That have your summer with your winter mixed" (line 13)

5. "And yet this time remov'd" (line 14)