could overdose
Regular verb: overdose - overdosed- overdosed

Affirmation 	
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I could overdose
you could overdose
he could overdose
we could overdose
you could overdose
they could overdose 	I could be overdosing
you could be overdosing
he could be overdosing
we could be overdosing
you could be overdosing
they could be overdosing	I could have overdosed
you could have overdosed
he could have overdosed
we could have overdosed
you could have overdosed
they could have overdosed	I could have been overdosing
you could have been overdosing
he could have been overdosing
we could have been overdosing
you could have been overdosing
they could have been overdosing	

Negation 	
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I could not overdose
you could not overdose
he could not overdose
we could not overdose
you could not overdose
they could not overdose 	I could not be overdosing
you could not be overdosing
he could not be overdosing
we could not be overdosing
you could not be overdosing
they could not be overdosing	I could not have overdosed
you could not have overdosed
he could not have overdosed
we could not have overdosed
you could not have overdosed
they could not have overdosed	I could not have been overdosing
you could not have been overdosing
he could not have been overdosing
we could not have been overdosing
you could not have been overdosing
they could not have been overdosing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overdose?
could you overdose?
could he overdose?
could we overdose?
could you overdose?
could they overdose? 	could I be overdosing?
could you be overdosing?
could he be overdosing?
could we be overdosing?
could you be overdosing?
could they be overdosing? 	could I have overdosed?
could you have overdosed?
could he have overdosed?
could we have overdosed?
could you have overdosed?
could they have overdosed? 	could I have been overdosing?
could you have been overdosing?
could he have been overdosing?
could we have been overdosing?
could you have been overdosing?
could they have been overdosing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not overdose?
could you not overdose?
could he not overdose?
could we not overdose?
could you not overdose?
could they not overdose? 	could I not be overdosing?
could you not be overdosing?
could he not be overdosing?
could we not be overdosing?
could you not be overdosing?
could they not be overdosing? 	could I not have overdosed?
could you not have overdosed?
could he not have overdosed?
could we not have overdosed?
could you not have overdosed?
could they not have overdosed? 	could I not have been overdosing?
could you not have been overdosing?
could he not have been overdosing?
could we not have been overdosing?
could you not have been overdosing?
could they not have been overdosing?