Correct order of priorities of various groups according to CIP rules is

According to CIP rules, the group in which the directly attached atom has highest atomic number is given the highest priority ;
If the directly attached atom is the same then the next atom must be considered ;
Each double bonded (or) triple bonded atom is considered as two such (or) three such atoms respectively.
$\therefore$  $$\begin{gathered} – \mathrm{OH} > – {\mathrm{NH}}_2 > – \mathrm{COOH} > –\mathrm{CHO} \\ – \mathrm{OH} > – {\mathrm{NH}}_2 > \mathrm{C}, \mathrm{O}, \mathrm{O}, \mathrm{O} > –\mathrm{C}, \mathrm{O}, \mathrm{O}, \mathrm{H} \end{gathered}$$