can change
Regular verb: change - changed- changed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can change
you can change
she can change
we can change
you can change
they can change 	I can be changing
you can be changing
she can be changing
we can be changing
you can be changing
they can be changing	I can have changed
you can have changed
she can have changed
we can have changed
you can have changed
they can have changed	I can have been changing
you can have been changing
she can have been changing
we can have been changing
you can have been changing
they can have been changing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't change
you can't change
she can't change
we can't change
you can't change
they can't change 	I can't be changing
you can't be changing
she can't be changing
we can't be changing
you can't be changing
they can't be changing	I can't have changed
you can't have changed
she can't have changed
we can't have changed
you can't have changed
they can't have changed	I can't have been changing
you can't have been changing
she can't have been changing
we can't have been changing
you can't have been changing
they can't have been changing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I change?
can you change?
can she change?
can we change?
can you change?
can they change? 	can I be changing?
can you be changing?
can she be changing?
can we be changing?
can you be changing?
can they be changing? 	can I have changed?
can you have changed?
can she have changed?
can we have changed?
can you have changed?
can they have changed? 	can I have been changing?
can you have been changing?
can she have been changing?
can we have been changing?
can you have been changing?
can they have been changing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I change?
can't you change?
can't she change?
can't we change?
can't you change?
can't they change? 	can't I be changing?
can't you be changing?
can't she be changing?
can't we be changing?
can't you be changing?
can't they be changing? 	can't I have changed?
can't you have changed?
can't she have changed?
can't we have changed?
can't you have changed?
can't they have changed? 	can't I have been changing?
can't you have been changing?
can't she have been changing?
can't we have been changing?
can't you have been changing?
can't they have been changing?