can regress
Regular verb: regress - regressed- regressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can regress
you can regress
he can regress
we can regress
you can regress
they can regress 	I can be regressing
you can be regressing
he can be regressing
we can be regressing
you can be regressing
they can be regressing	I can have regressed
you can have regressed
he can have regressed
we can have regressed
you can have regressed
they can have regressed	I can have been regressing
you can have been regressing
he can have been regressing
we can have been regressing
you can have been regressing
they can have been regressing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't regress
you can't regress
he can't regress
we can't regress
you can't regress
they can't regress 	I can't be regressing
you can't be regressing
he can't be regressing
we can't be regressing
you can't be regressing
they can't be regressing	I can't have regressed
you can't have regressed
he can't have regressed
we can't have regressed
you can't have regressed
they can't have regressed	I can't have been regressing
you can't have been regressing
he can't have been regressing
we can't have been regressing
you can't have been regressing
they can't have been regressing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I regress?
can you regress?
can he regress?
can we regress?
can you regress?
can they regress? 	can I be regressing?
can you be regressing?
can he be regressing?
can we be regressing?
can you be regressing?
can they be regressing? 	can I have regressed?
can you have regressed?
can he have regressed?
can we have regressed?
can you have regressed?
can they have regressed? 	can I have been regressing?
can you have been regressing?
can he have been regressing?
can we have been regressing?
can you have been regressing?
can they have been regressing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I regress?
can't you regress?
can't he regress?
can't we regress?
can't you regress?
can't they regress? 	can't I be regressing?
can't you be regressing?
can't he be regressing?
can't we be regressing?
can't you be regressing?
can't they be regressing? 	can't I have regressed?
can't you have regressed?
can't he have regressed?
can't we have regressed?
can't you have regressed?
can't they have regressed? 	can't I have been regressing?
can't you have been regressing?
can't he have been regressing?
can't we have been regressing?
can't you have been regressing?
can't they have been regressing?