can distinguish
Regular verb: distinguish - distinguished- distinguished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can distinguish
you can distinguish
he can distinguish
we can distinguish
you can distinguish
they can distinguish 	I can be distinguishing
you can be distinguishing
he can be distinguishing
we can be distinguishing
you can be distinguishing
they can be distinguishing	I can have distinguished
you can have distinguished
he can have distinguished
we can have distinguished
you can have distinguished
they can have distinguished	I can have been distinguishing
you can have been distinguishing
he can have been distinguishing
we can have been distinguishing
you can have been distinguishing
they can have been distinguishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot distinguish
you cannot distinguish
he cannot distinguish
we cannot distinguish
you cannot distinguish
they cannot distinguish 	I cannot be distinguishing
you cannot be distinguishing
he cannot be distinguishing
we cannot be distinguishing
you cannot be distinguishing
they cannot be distinguishing	I cannot have distinguished
you cannot have distinguished
he cannot have distinguished
we cannot have distinguished
you cannot have distinguished
they cannot have distinguished	I cannot have been distinguishing
you cannot have been distinguishing
he cannot have been distinguishing
we cannot have been distinguishing
you cannot have been distinguishing
they cannot have been distinguishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I distinguish?
can you distinguish?
can he distinguish?
can we distinguish?
can you distinguish?
can they distinguish? 	can I be distinguishing?
can you be distinguishing?
can he be distinguishing?
can we be distinguishing?
can you be distinguishing?
can they be distinguishing? 	can I have distinguished?
can you have distinguished?
can he have distinguished?
can we have distinguished?
can you have distinguished?
can they have distinguished? 	can I have been distinguishing?
can you have been distinguishing?
can he have been distinguishing?
can we have been distinguishing?
can you have been distinguishing?
can they have been distinguishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not distinguish?
can you not distinguish?
can he not distinguish?
can we not distinguish?
can you not distinguish?
can they not distinguish? 	can I not be distinguishing?
can you not be distinguishing?
can he not be distinguishing?
can we not be distinguishing?
can you not be distinguishing?
can they not be distinguishing? 	can I not have distinguished?
can you not have distinguished?
can he not have distinguished?
can we not have distinguished?
can you not have distinguished?
can they not have distinguished? 	can I not have been distinguishing?
can you not have been distinguishing?
can he not have been distinguishing?
can we not have been distinguishing?
can you not have been distinguishing?
can they not have been distinguishing?