* I know why he wanted to see you.
Explanation:
* I: One syllable, stressed.
* know: Two syllables, stressed on the first.
* why: One syllable, stressed.
* he: One syllable, stressed.
* wanted: Two syllables, stressed on the first.
* to: One syllable, unstressed (since it's a preposition).
* see: One syllable, stressed.
* you: One syllable, stressed.
Note: The stress pattern in a sentence can change depending on the context and the speaker's intention. However, the breakdown above represents the typical stress pattern for this sentence.