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