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 can't distinguish you can't distinguish he can't distinguish we can't distinguish you can't distinguish they can't distinguish	I can't be distinguishing you can't be distinguishing he can't be distinguishing we can't be distinguishing you can't be distinguishing they can't be distinguishing
Perfect	V-ing perfect
I can't have distinguished you can't have distinguished he can't have distinguished we can't have distinguished you can't have distinguished they can't have distinguished	I can't have been distinguishing you can't have been distinguishing he can't have been distinguishing we can't have been distinguishing you can't have been distinguishing they can't 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't I distinguish? can't you distinguish? can't he distinguish? can't we distinguish? can't you distinguish? can't they distinguish?	can't I be distinguishing? can't you be distinguishing? can't he be distinguishing? can't we be distinguishing? can't you be distinguishing? can't they be distinguishing?
Perfect	V-ing perfect
can't I have distinguished? can't you have distinguished? can't he have distinguished? can't we have distinguished? can't you have distinguished? can't they have distinguished?	can't I have been distinguishing? can't you have been distinguishing? can't he have been distinguishing? can't we have been distinguishing? can't you have been distinguishing? can't they have been distinguishing?