CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
CH3-CH(CH3)-CH2-CH2-CH2-CH2-CH2-CH3
CH3-C(CH3)2-CH2-CH2-CH2-CH2-CH3
CH3-CH(CH3)-CH(CH3)-CH2-CH2-CH2-CH3
CH3-CH(CH3)-CH(CH3)-CH(CH3)-CH2-CH3
CH3-CH(CH3)-CH(CH3)-CH(C2H5)-CH3
CH3-CH2-CH2-CH(C2H5)-CH2-CH2-CH3
CH3-CH(C2H5)-CH2-CH2-CH2-CH2-CH3
CH3-CH(C2H5)-CH2-CH(C2H5)-CH3
CH3-C(CH3)2-CH2-C(CH3)2-CH3