Pattern for project roles in role based strategy

I want to differentiate between QA/Prod for example I have Jenkins projects by names 1)Ck-init-Prod 2) Mk-dir-Prod 3)CK-init-QA 4)Mk-dir-QA. I want to differentiate the jobs, I tried using (.*)Prod but it also shows me QA alone with Prod when I assign a user only Prod. can anyone help me fix this.