1) CH3 - C(CH3)(CH3) - C(CH3)(CH3) - CH2 - CH2 - CH2 - CH3
2) CH2 = C(CH3) - CH(CH3) - CH(CH3) - CH2 - CH2 - CH2 - CH3
3) CH -= C - CH(CH3) - CH2 - CH3
4) CH2 = C = CH - C(CH3)(CH3) - CH3
5) CH3 - CH2 - C(OH)(CH3) - CH2 - CH3
6) CH3 - C(CH3)(CH3) - COH
7) CH3 - CH2 - C(CH3)(CH3) - COOH