Use these pairs of letters to fill the blanks. The letters are np, dl, so, ph, ag, re, ch, bi.

Here are the completed words using the provided pairs of letters:

1. ca n n er
2. ri d d le (Assuming dl is intended to form dd for the common word "riddle", as no other pair fits and dl is the closest visually/phonetically for a common word. If dl must be used as dl, then no common word fits here.)
3. ke n n el
4. lo n g ly (Assuming gh is intended to form gl for "longly", or that gh is a typo for gl. If gh must be used as gh, then no common word fits here.)
5. `