I could sedate you could sedate she could sedate we could sedate you could sedate they could sedate
V-ing form
I could be sedating you could be sedating she could be sedating we could be sedating you could be sedating they could be sedating
Perfect
I could have sedated you could have sedated she could have sedated we could have sedated you could have sedated they could have sedated
V-ing perfect
I could have been sedating you could have been sedating she could have been sedating we could have been sedating you could have been sedating they could have been sedating
Negation
Simple form
I could not sedate you could not sedate she could not sedate we could not sedate you could not sedate they could not sedate
V-ing form
I could not be sedating you could not be sedating she could not be sedating we could not be sedating you could not be sedating they could not be sedating
Perfect
I could not have sedated you could not have sedated she could not have sedated we could not have sedated you could not have sedated they could not have sedated
V-ing perfect
I could not have been sedating you could not have been sedating she could not have been sedating we could not have been sedating you could not have been sedating they could not have been sedating
Interrogative form
Simple form
could I sedate? could you sedate? could she sedate? could we sedate? could you sedate? could they sedate?
V-ing form
could I be sedating? could you be sedating? could she be sedating? could we be sedating? could you be sedating? could they be sedating?
Perfect
could I have sedated? could you have sedated? could she have sedated? could we have sedated? could you have sedated? could they have sedated?
V-ing perfect
could I have been sedating? could you have been sedating? could she have been sedating? could we have been sedating? could you have been sedating? could they have been sedating?
Interro-negative form
Simple form
could I not sedate? could you not sedate? could she not sedate? could we not sedate? could you not sedate? could they not sedate?
V-ing form
could I not be sedating? could you not be sedating? could she not be sedating? could we not be sedating? could you not be sedating? could they not be sedating?
Perfect
could I not have sedated? could you not have sedated? could she not have sedated? could we not have sedated? could you not have sedated? could they not have sedated?
V-ing perfect
could I not have been sedating? could you not have been sedating? could she not have been sedating? could we not have been sedating? could you not have been sedating? could they not have been sedating?