English verb conjugation
CAN DISTINGUISH

Regular verb: distinguish - distinguished - distinguished

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?