CH3 - CH = CH - CH(CH3) - CH3
CH3 - C(Cl) = C(Cl) - CH2 - CH2 - CH3
CH3 - C(CH3) = CH - CH(CH3) - CH2 - C H2- CH3
CH3 - CH = CH - CH(CH3) - CH3
CH3 - C(Cl) = C(Cl) - CH2 - CH2 - CH3
CH3 - C(CH3) = CH - CH(CH3) - CH2 - C H2- CH3