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