Identify four functional groups $($FG$\text{'}$s$)$ and assign the class of compounds for each molecule. $4$ points

Choose FG$\text{'}$s from: Vinyl, allyl, alkynyl, phenyl, benzyl, chloro, bromo, iodo, hydroxyl, alkoxy $($ether$),$ amino, mercapto, alkylthio, carbonyl, carboxy, amido, cyano

Choose classes from: alkene, alkyne, aromatic compound, alkyl halide, alcohol, ether, amine, thiol, thioether, aldehyde, ketone, carboxylic acid, ester, acyl chloride, amide, nitrilE