$\begin{array}{1 1}(a)\;ClH....Cl > NH....N > OH....O > FH.....F\\(b)\; FH....F > NH....N > OH....O > ClH.....Cl\\(c)\;NH....N > FH....F > ClH....Cl > OH.....O\\(d)\;FH....F > HO....O > NH....N > ClH.....Cl\end{array}$