−CH3,−Cl-\mathrm{CH}_{3},-\mathrm{Cl}−CH3,−Cl
−CH3,−NO2-\mathrm{CH}_{3},-\mathrm{NO}_{2}−CH3,−NO2
−NH2,−Cl-\mathrm{NH}_{2},-\mathrm{Cl}−NH2,−Cl
−CH3,−NH2-\mathrm{CH}_{3},-\mathrm{NH}_{2}−CH3,−NH2
−NH2,−NO2-\mathrm{NH}_{2},-\mathrm{NO}_{2}−NH2,−NO2
