CH2=CH−C≡CH
HC≡C−C≡CH
CH2=CH−CH=CH2
CH3−CH=CH−CH3
CH2=CH−C≡CH represents the order of hybridization sp2, sp2, sp, sp from left to right atoms. C atoms attached to a double bond are sp2 hybridized. C atoms attached to a triple bond are sp hybridized.