could shrink
Irregular verb: shrink - shrank- shrunk

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could shrink
you could shrink
he could shrink
we could shrink
you could shrink
they could shrink 	I could be shrinking
you could be shrinking
he could be shrinking
we could be shrinking
you could be shrinking
they could be shrinking	I could have shrunk
you could have shrunk
he could have shrunk
we could have shrunk
you could have shrunk
they could have shrunk	I could have been shrinking
you could have been shrinking
he could have been shrinking
we could have been shrinking
you could have been shrinking
they could have been shrinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't shrink
you couldn't shrink
he couldn't shrink
we couldn't shrink
you couldn't shrink
they couldn't shrink 	I couldn't be shrinking
you couldn't be shrinking
he couldn't be shrinking
we couldn't be shrinking
you couldn't be shrinking
they couldn't be shrinking	I couldn't have shrunk
you couldn't have shrunk
he couldn't have shrunk
we couldn't have shrunk
you couldn't have shrunk
they couldn't have shrunk	I couldn't have been shrinking
you couldn't have been shrinking
he couldn't have been shrinking
we couldn't have been shrinking
you couldn't have been shrinking
they couldn't have been shrinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I shrink?
could you shrink?
could he shrink?
could we shrink?
could you shrink?
could they shrink? 	could I be shrinking?
could you be shrinking?
could he be shrinking?
could we be shrinking?
could you be shrinking?
could they be shrinking? 	could I have shrunk?
could you have shrunk?
could he have shrunk?
could we have shrunk?
could you have shrunk?
could they have shrunk? 	could I have been shrinking?
could you have been shrinking?
could he have been shrinking?
could we have been shrinking?
could you have been shrinking?
could they have been shrinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I shrink?
couldn't you shrink?
couldn't he shrink?
couldn't we shrink?
couldn't you shrink?
couldn't they shrink? 	couldn't I be shrinking?
couldn't you be shrinking?
couldn't he be shrinking?
couldn't we be shrinking?
couldn't you be shrinking?
couldn't they be shrinking? 	couldn't I have shrunk?
couldn't you have shrunk?
couldn't he have shrunk?
couldn't we have shrunk?
couldn't you have shrunk?
couldn't they have shrunk? 	couldn't I have been shrinking?
couldn't you have been shrinking?
couldn't he have been shrinking?
couldn't we have been shrinking?
couldn't you have been shrinking?
couldn't they have been shrinking?