could overdrink
Irregular verb: overdrink - overdrank- overdrunk

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overdrink
you could overdrink
he could overdrink
we could overdrink
you could overdrink
they could overdrink 	I could be overdrinking
you could be overdrinking
he could be overdrinking
we could be overdrinking
you could be overdrinking
they could be overdrinking	I could have overdrunk
you could have overdrunk
he could have overdrunk
we could have overdrunk
you could have overdrunk
they could have overdrunk	I could have been overdrinking
you could have been overdrinking
he could have been overdrinking
we could have been overdrinking
you could have been overdrinking
they could have been overdrinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overdrink
you couldn't overdrink
he couldn't overdrink
we couldn't overdrink
you couldn't overdrink
they couldn't overdrink 	I couldn't be overdrinking
you couldn't be overdrinking
he couldn't be overdrinking
we couldn't be overdrinking
you couldn't be overdrinking
they couldn't be overdrinking	I couldn't have overdrunk
you couldn't have overdrunk
he couldn't have overdrunk
we couldn't have overdrunk
you couldn't have overdrunk
they couldn't have overdrunk	I couldn't have been overdrinking
you couldn't have been overdrinking
he couldn't have been overdrinking
we couldn't have been overdrinking
you couldn't have been overdrinking
they couldn't have been overdrinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overdrink?
could you overdrink?
could he overdrink?
could we overdrink?
could you overdrink?
could they overdrink? 	could I be overdrinking?
could you be overdrinking?
could he be overdrinking?
could we be overdrinking?
could you be overdrinking?
could they be overdrinking? 	could I have overdrunk?
could you have overdrunk?
could he have overdrunk?
could we have overdrunk?
could you have overdrunk?
could they have overdrunk? 	could I have been overdrinking?
could you have been overdrinking?
could he have been overdrinking?
could we have been overdrinking?
could you have been overdrinking?
could they have been overdrinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overdrink?
couldn't you overdrink?
couldn't he overdrink?
couldn't we overdrink?
couldn't you overdrink?
couldn't they overdrink? 	couldn't I be overdrinking?
couldn't you be overdrinking?
couldn't he be overdrinking?
couldn't we be overdrinking?
couldn't you be overdrinking?
couldn't they be overdrinking? 	couldn't I have overdrunk?
couldn't you have overdrunk?
couldn't he have overdrunk?
couldn't we have overdrunk?
couldn't you have overdrunk?
couldn't they have overdrunk? 	couldn't I have been overdrinking?
couldn't you have been overdrinking?
couldn't he have been overdrinking?
couldn't we have been overdrinking?
couldn't you have been overdrinking?
couldn't they have been overdrinking?