-qui.

Headword: 
-qui.
Principal English Translation: 

one who does this task; e.g. texinqui, one who cuts stone; -chiuhqui, one who makes that thing; e.g. caczoqui or cacchiuhqui, one who makes shoes, -pixqui, one who keeps or guards something, e.g., macuiltecpanpixqui, guardian over one hundred tribute payers; etc. (SW)

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.

See also: