could sedate
Regular verb: sedate - sedated- sedated

Affirmation 	
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I could sedate
you could sedate
he could sedate
we could sedate
you could sedate
they could sedate 	I could be sedating
you could be sedating
he could be sedating
we could be sedating
you could be sedating
they could be sedating	I could have sedated
you could have sedated
he could have sedated
we could have sedated
you could have sedated
they could have sedated	I could have been sedating
you could have been sedating
he could have been sedating
we could have been sedating
you could have been sedating
they could have been sedating	

Negation 	
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I couldn't sedate
you couldn't sedate
he couldn't sedate
we couldn't sedate
you couldn't sedate
they couldn't sedate 	I couldn't be sedating
you couldn't be sedating
he couldn't be sedating
we couldn't be sedating
you couldn't be sedating
they couldn't be sedating	I couldn't have sedated
you couldn't have sedated
he couldn't have sedated
we couldn't have sedated
you couldn't have sedated
they couldn't have sedated	I couldn't have been sedating
you couldn't have been sedating
he couldn't have been sedating
we couldn't have been sedating
you couldn't have been sedating
they couldn't have been sedating	

Interrogative form 	
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could I sedate?
could you sedate?
could he sedate?
could we sedate?
could you sedate?
could they sedate? 	could I be sedating?
could you be sedating?
could he be sedating?
could we be sedating?
could you be sedating?
could they be sedating? 	could I have sedated?
could you have sedated?
could he have sedated?
could we have sedated?
could you have sedated?
could they have sedated? 	could I have been sedating?
could you have been sedating?
could he have been sedating?
could we have been sedating?
could you have been sedating?
could they have been sedating? 	

Interro-negative form 	
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couldn't I sedate?
couldn't you sedate?
couldn't he sedate?
couldn't we sedate?
couldn't you sedate?
couldn't they sedate? 	couldn't I be sedating?
couldn't you be sedating?
couldn't he be sedating?
couldn't we be sedating?
couldn't you be sedating?
couldn't they be sedating? 	couldn't I have sedated?
couldn't you have sedated?
couldn't he have sedated?
couldn't we have sedated?
couldn't you have sedated?
couldn't they have sedated? 	couldn't I have been sedating?
couldn't you have been sedating?
couldn't he have been sedating?
couldn't we have been sedating?
couldn't you have been sedating?
couldn't they have been sedating?