Excel if then statement

I have a long list of points on a spreadsheet. I need a cell to say the point (m1-1), (m1-2) and so on. And I don't need it to say m 1 minus 1. I need it m1 dash 1. That is the point type. I want it to where I can just type the number 1 or 2 or 3 and m1-1, m1-2, m1-3 will appear in that cell. Is this possible?

Thanks!