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