Draw the line$-$stick structures for the following IUPAC compound names. $(1$ pt ea$)$

a$.6-$ethyl$-3-$methylnonane

d$.1-$bromo$-4-$isopropyl$-2-$methylcycloheptane

b$.1,4-$dichloro$-4-$ethylheptane

e$.6-$ethyl$-7-$methylcycloocta$-1,3-$diene

c$.6-$methyl$-3-$propylhept$-2-$ene