Words with three letters in both syllables

Mam-mal is an example of one

If you're looking for unspecific words with three letters per syllable, I can list a few for you.

- Cel-ebr-ate

- Imp-ort-ant.

- Pol-lut-ion.

- Wed-nes-day.

If just three letters per two syllables, here's some as well, as I'm not sure of what you're asking for.

- Iod-ine.

- Mex-ico.

- Oxy-gen.

- Saf-ety.

I'm sorry if this wasn't what you're looking for. I hope you have a great day!