I could annotate you could annotate she could annotate we could annotate you could annotate they could annotate
V-ing form
I could be annotating you could be annotating she could be annotating we could be annotating you could be annotating they could be annotating
Perfect
I could have annotated you could have annotated she could have annotated we could have annotated you could have annotated they could have annotated
V-ing perfect
I could have been annotating you could have been annotating she could have been annotating we could have been annotating you could have been annotating they could have been annotating
Negation
Simple form
I couldn't annotate you couldn't annotate she couldn't annotate we couldn't annotate you couldn't annotate they couldn't annotate
V-ing form
I couldn't be annotating you couldn't be annotating she couldn't be annotating we couldn't be annotating you couldn't be annotating they couldn't be annotating
Perfect
I couldn't have annotated you couldn't have annotated she couldn't have annotated we couldn't have annotated you couldn't have annotated they couldn't have annotated
V-ing perfect
I couldn't have been annotating you couldn't have been annotating she couldn't have been annotating we couldn't have been annotating you couldn't have been annotating they couldn't have been annotating
Interrogative form
Simple form
could I annotate? could you annotate? could she annotate? could we annotate? could you annotate? could they annotate?
V-ing form
could I be annotating? could you be annotating? could she be annotating? could we be annotating? could you be annotating? could they be annotating?
Perfect
could I have annotated? could you have annotated? could she have annotated? could we have annotated? could you have annotated? could they have annotated?
V-ing perfect
could I have been annotating? could you have been annotating? could she have been annotating? could we have been annotating? could you have been annotating? could they have been annotating?
Interro-negative form
Simple form
couldn't I annotate? couldn't you annotate? couldn't she annotate? couldn't we annotate? couldn't you annotate? couldn't they annotate?
V-ing form
couldn't I be annotating? couldn't you be annotating? couldn't she be annotating? couldn't we be annotating? couldn't you be annotating? couldn't they be annotating?
Perfect
couldn't I have annotated? couldn't you have annotated? couldn't she have annotated? couldn't we have annotated? couldn't you have annotated? couldn't they have annotated?
V-ing perfect
couldn't I have been annotating? couldn't you have been annotating? couldn't she have been annotating? couldn't we have been annotating? couldn't you have been annotating? couldn't they have been annotating?