If you wish to strum:
C - G - Am - Em
Or if you wish to pick: C G Am Eme|---------------------------------------------0----------------------|B|---------------1--0--------------0--------------1------------0------|G|------------0--------0--------0-----------2--------2------0---------|D|---------2-----------------------------2----------------------------|A|------3-----------------------------0-------------------------------|C|-------------------------3-3--------------------------0-0-----------|
C G Am Eme|---------------------------------------------0----------------------|B|---------------1--0--------------0--------------1-------------------|G|------------0--------0--------0-----------2--------2----------0-----|D|---------2-----------------------------2-------------------2--------|A|------3-----------------------------0-------------------------------|C|-------------------------3-3--------------------------0-0-----------|