Which of the following is chiral? (Answer is E)

A) cis-1-bromo-3-chlorocyclobutane
B) trans-1-bromo-3-chlorocyclobutane
C) cis-1,4-dimethylcyclohexane
D) cis-1,3-dimethylcyclohexane
E) trans-1,3-dimethylcyclohexane

Could you please provide a picture/diagram of each chemical compound, that's what im finding hard and relating that to whetherit is/isn't chiral. They showed us clearly how to draw the cyclohexane chair structures, but never really showed us how to doa cyclobutane