The affix -Katik- is attached to a verb to indicate someone or some people who do something with someone else:
| ilinniak- | to learn |
| ilinniaKatik | classmate |
| suliaKak- | to work |
| suliaKaKatik | co-worker |
| tânsik- | to dance |
| tânsiKatik | dancing partner |
| katik- | to meet |
| katiKatik | someone with whom one meets |
-Katik is often followed by the affix -gi- meaning to have, which creates a relationship between two or more people. The affix -gi- is followed by a transitive verb ending:
| Susi ilinniaKatigijaga | Susi is my classmate (literally, I have Susi as a classmate). |
| mitsuKatigijanga | She sews with her. |
| katiKatigigajakKâma? | Can you meet with me? |
| Taiviti suliaKaKatigijân? | Do you work with Taiviti? (literally, do you have Taiviti as a co-worker)? |
With regard to the last example above, when answering a question like this, the construction is usually simplified when you answer:
| ii, suliaKaKatiga |
| Yes, he is my co-worker. |