Aortic area- 2nd ICS to right of sternum (closure of the aortic valve loudest here).
Pulmonic area- 2nd ICS to left of sternum (closure of the pulmonic valve loudest here).
Tricuspid- 5th ICS left of sternal border (closure of tricuspid valve).
Mitral- 5th ICS left of the sternum just medial to MCL (closure of mitral valve).