Conjugación del verbo inglés
CAN RETROGRESS

Verbo regular: retrogress - retrogressed - retrogressed

Afirmación

Forma simple	Forma con V-ing
I can retrogress you can retrogress he can retrogress we can retrogress you can retrogress they can retrogress	I can be retrogressing you can be retrogressing he can be retrogressing we can be retrogressing you can be retrogressing they can be retrogressing
Perfecto	Perfecto con V-ing
I can have retrogressed you can have retrogressed he can have retrogressed we can have retrogressed you can have retrogressed they can have retrogressed	I can have been retrogressing you can have been retrogressing he can have been retrogressing we can have been retrogressing you can have been retrogressing they can have been retrogressing

Negación

Forma simple	Forma con V-ing
I can't retrogress you can't retrogress he can't retrogress we can't retrogress you can't retrogress they can't retrogress	I can't be retrogressing you can't be retrogressing he can't be retrogressing we can't be retrogressing you can't be retrogressing they can't be retrogressing
Perfecto	Perfecto con V-ing
I can't have retrogressed you can't have retrogressed he can't have retrogressed we can't have retrogressed you can't have retrogressed they can't have retrogressed	I can't have been retrogressing you can't have been retrogressing he can't have been retrogressing we can't have been retrogressing you can't have been retrogressing they can't have been retrogressing

Forma interrogativa

Forma simple	Forma con V-ing
can I retrogress? can you retrogress? can he retrogress? can we retrogress? can you retrogress? can they retrogress?	can I be retrogressing? can you be retrogressing? can he be retrogressing? can we be retrogressing? can you be retrogressing? can they be retrogressing?
Perfecto	Perfecto con V-ing
can I have retrogressed? can you have retrogressed? can he have retrogressed? can we have retrogressed? can you have retrogressed? can they have retrogressed?	can I have been retrogressing? can you have been retrogressing? can he have been retrogressing? can we have been retrogressing? can you have been retrogressing? can they have been retrogressing?

Forma interro-negativa

Forma simple	Forma con V-ing
can't I retrogress? can't you retrogress? can't he retrogress? can't we retrogress? can't you retrogress? can't they retrogress?	can't I be retrogressing? can't you be retrogressing? can't he be retrogressing? can't we be retrogressing? can't you be retrogressing? can't they be retrogressing?
Perfecto	Perfecto con V-ing
can't I have retrogressed? can't you have retrogressed? can't he have retrogressed? can't we have retrogressed? can't you have retrogressed? can't they have retrogressed?	can't I have been retrogressing? can't you have been retrogressing? can't he have been retrogressing? can't we have been retrogressing? can't you have been retrogressing? can't they have been retrogressing?