The grapheme qu corresponds with the phonemes /k/ and /w/ (ex. quiet or quit). The grapheme x corresponds with the following:

• the phonemes /k/ and /s/ (ex. fox or box).

• the phonemes /g/ and /z/ as in (ex. exit).

Many educators post these two grapheme cards off to the side near the /k/ card. You can add a label that says "two sounds" or "borrowers" if you would like.