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 can't mature you can't mature he can't mature we can't mature you can't mature they can't mature	I can't be maturing you can't be maturing he can't be maturing we can't be maturing you can't be maturing they can't be maturing
Perfect	V-ing perfect
I can't have matured you can't have matured he can't have matured we can't have matured you can't have matured they can't have matured	I can't have been maturing you can't have been maturing he can't have been maturing we can't have been maturing you can't have been maturing they can't 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't I mature? can't you mature? can't he mature? can't we mature? can't you mature? can't they mature?	can't I be maturing? can't you be maturing? can't he be maturing? can't we be maturing? can't you be maturing? can't they be maturing?
Perfect	V-ing perfect
can't I have matured? can't you have matured? can't he have matured? can't we have matured? can't you have matured? can't they have matured?	can't I have been maturing? can't you have been maturing? can't he have been maturing? can't we have been maturing? can't you have been maturing? can't they have been maturing?