I could renovate you could renovate he could renovate we could renovate you could renovate they could renovate
V-ing form
I could be renovating you could be renovating he could be renovating we could be renovating you could be renovating they could be renovating
Perfect
I could have renovated you could have renovated he could have renovated we could have renovated you could have renovated they could have renovated
V-ing perfect
I could have been renovating you could have been renovating he could have been renovating we could have been renovating you could have been renovating they could have been renovating
Negation
Simple form
I couldn't renovate you couldn't renovate he couldn't renovate we couldn't renovate you couldn't renovate they couldn't renovate
V-ing form
I couldn't be renovating you couldn't be renovating he couldn't be renovating we couldn't be renovating you couldn't be renovating they couldn't be renovating
Perfect
I couldn't have renovated you couldn't have renovated he couldn't have renovated we couldn't have renovated you couldn't have renovated they couldn't have renovated
V-ing perfect
I couldn't have been renovating you couldn't have been renovating he couldn't have been renovating we couldn't have been renovating you couldn't have been renovating they couldn't have been renovating
Interrogative form
Simple form
could I renovate? could you renovate? could he renovate? could we renovate? could you renovate? could they renovate?
V-ing form
could I be renovating? could you be renovating? could he be renovating? could we be renovating? could you be renovating? could they be renovating?
Perfect
could I have renovated? could you have renovated? could he have renovated? could we have renovated? could you have renovated? could they have renovated?
V-ing perfect
could I have been renovating? could you have been renovating? could he have been renovating? could we have been renovating? could you have been renovating? could they have been renovating?
Interro-negative form
Simple form
couldn't I renovate? couldn't you renovate? couldn't he renovate? couldn't we renovate? couldn't you renovate? couldn't they renovate?
V-ing form
couldn't I be renovating? couldn't you be renovating? couldn't he be renovating? couldn't we be renovating? couldn't you be renovating? couldn't they be renovating?
Perfect
couldn't I have renovated? couldn't you have renovated? couldn't he have renovated? couldn't we have renovated? couldn't you have renovated? couldn't they have renovated?
V-ing perfect
couldn't I have been renovating? couldn't you have been renovating? couldn't he have been renovating? couldn't we have been renovating? couldn't you have been renovating? couldn't they have been renovating?