* b (as in "bed")
* e (as in "bed")
* g (as in "beg")
* d (as in "bed")
Let's break it down:
* b and g are both single consonant phonemes.
* e represents the short vowel sound /ɛ/ as in "bed".
* d is a single consonant phoneme.
Therefore, there are 4 phonemes in the word "begged".