English verb conjugation
CAN PROGRESS

Regular verb: progress - progressed - progressed

Affirmation

Simple form	V-ing form
I can progress you can progress he can progress we can progress you can progress they can progress	I can be progressing you can be progressing he can be progressing we can be progressing you can be progressing they can be progressing
Perfect	V-ing perfect
I can have progressed you can have progressed he can have progressed we can have progressed you can have progressed they can have progressed	I can have been progressing you can have been progressing he can have been progressing we can have been progressing you can have been progressing they can have been progressing

Negation

Simple form	V-ing form
I cannot progress you cannot progress he cannot progress we cannot progress you cannot progress they cannot progress	I cannot be progressing you cannot be progressing he cannot be progressing we cannot be progressing you cannot be progressing they cannot be progressing
Perfect	V-ing perfect
I cannot have progressed you cannot have progressed he cannot have progressed we cannot have progressed you cannot have progressed they cannot have progressed	I cannot have been progressing you cannot have been progressing he cannot have been progressing we cannot have been progressing you cannot have been progressing they cannot have been progressing

Interrogative form

Simple form	V-ing form
can I progress? can you progress? can he progress? can we progress? can you progress? can they progress?	can I be progressing? can you be progressing? can he be progressing? can we be progressing? can you be progressing? can they be progressing?
Perfect	V-ing perfect
can I have progressed? can you have progressed? can he have progressed? can we have progressed? can you have progressed? can they have progressed?	can I have been progressing? can you have been progressing? can he have been progressing? can we have been progressing? can you have been progressing? can they have been progressing?

Interro-negative form

Simple form	V-ing form
can I not progress? can you not progress? can he not progress? can we not progress? can you not progress? can they not progress?	can I not be progressing? can you not be progressing? can he not be progressing? can we not be progressing? can you not be progressing? can they not be progressing?
Perfect	V-ing perfect
can I not have progressed? can you not have progressed? can he not have progressed? can we not have progressed? can you not have progressed? can they not have progressed?	can I not have been progressing? can you not have been progressing? can he not have been progressing? can we not have been progressing? can you not have been progressing? can they not have been progressing?