English verb conjugation
CAN MATURE

Regular verb: mature - matured - matured

Affirmation

Simple form	V-ing form
I can mature you can mature he can mature we can mature you can mature they can mature	I can be maturing you can be maturing he can be maturing we can be maturing you can be maturing they can be maturing
Perfect	V-ing perfect
I can have matured you can have matured he can have matured we can have matured you can have matured they can have matured	I can have been maturing you can have been maturing he can have been maturing we can have been maturing you can have been maturing they can have been maturing

Negation

Simple form	V-ing form
I cannot mature you cannot mature he cannot mature we cannot mature you cannot mature they cannot mature	I cannot be maturing you cannot be maturing he cannot be maturing we cannot be maturing you cannot be maturing they cannot be maturing
Perfect	V-ing perfect
I cannot have matured you cannot have matured he cannot have matured we cannot have matured you cannot have matured they cannot have matured	I cannot have been maturing you cannot have been maturing he cannot have been maturing we cannot have been maturing you cannot have been maturing they cannot have been maturing

Interrogative form

Simple form	V-ing form
can I mature? can you mature? can he mature? can we mature? can you mature? can they mature?	can I be maturing? can you be maturing? can he be maturing? can we be maturing? can you be maturing? can they be maturing?
Perfect	V-ing perfect
can I have matured? can you have matured? can he have matured? can we have matured? can you have matured? can they have matured?	can I have been maturing? can you have been maturing? can he have been maturing? can we have been maturing? can you have been maturing? can they have been maturing?

Interro-negative form

Simple form	V-ing form
can I not mature? can you not mature? can he not mature? can we not mature? can you not mature? can they not mature?	can I not be maturing? can you not be maturing? can he not be maturing? can we not be maturing? can you not be maturing? can they not be maturing?
Perfect	V-ing perfect
can I not have matured? can you not have matured? can he not have matured? can we not have matured? can you not have matured? can they not have matured?	can I not have been maturing? can you not have been maturing? can he not have been maturing? can we not have been maturing? can you not have been maturing? can they not have been maturing?