-qui.

Headword: 
-qui.
Principal English Translation: 

one who does this task; e.g. texinqui, one who cuts stone; caczoqui or cacchiuhqui, one who makes shoes, or macuiltecpanpixqui, guardian over one hundred tribute payers

Attestations from sources in English: 

when combined with anything else that will follow, this ending becomes "-ca"
Stephanie Wood's notes from a seminar with James Lockhart.