What are all possible double bond and ring structure of c6h12?

Question

need this on my research assignment, help please asap, im begging you all

Answer 1

Well ... I think there are 27 !!

hex-1-ene

hex-2-ene

hex-3-ene

2-methylpent-1-ene

3-methylpent-1-ene (2 enantiomers)

4-methylpent-1-ene

2-methylpent-2-ene

3-methylpent-2-ene

4-methylpent-2-ene

2-ethylpent-1-ene (that can't be the right name?!)

2,3-dimethylbut-1-ene

3,3-dimethylbut-1-ene

2,3-dimethylbut-2-ene

cyclohexane

methylcyclopentane

1,1-dimethylcyclobutane

cis- and trans-1,2-dimethylcyclobutane

cis- and trans-1,3-dimethylcyclobutane

ethylcyclobutane

1,2,3-trimethylcyclopropane

1,1,2-trimethylcyclopropane

1-ethyl-1-methylcyclopropane

cis- and trans-1-ethyl-2-methylcyclopropane

But I can't guarantee I've not missed something!!