English verb conjugation
COULD RECEDE

Regular verb: recede - receded - receded

Affirmation

Simple form	V-ing form
I could recede you could recede he could recede we could recede you could recede they could recede	I could be receding you could be receding he could be receding we could be receding you could be receding they could be receding
Perfect	V-ing perfect
I could have receded you could have receded he could have receded we could have receded you could have receded they could have receded	I could have been receding you could have been receding he could have been receding we could have been receding you could have been receding they could have been receding

Negation

Simple form	V-ing form
I couldn't recede you couldn't recede he couldn't recede we couldn't recede you couldn't recede they couldn't recede	I couldn't be receding you couldn't be receding he couldn't be receding we couldn't be receding you couldn't be receding they couldn't be receding
Perfect	V-ing perfect
I couldn't have receded you couldn't have receded he couldn't have receded we couldn't have receded you couldn't have receded they couldn't have receded	I couldn't have been receding you couldn't have been receding he couldn't have been receding we couldn't have been receding you couldn't have been receding they couldn't have been receding

Interrogative form

Simple form	V-ing form
could I recede? could you recede? could he recede? could we recede? could you recede? could they recede?	could I be receding? could you be receding? could he be receding? could we be receding? could you be receding? could they be receding?
Perfect	V-ing perfect
could I have receded? could you have receded? could he have receded? could we have receded? could you have receded? could they have receded?	could I have been receding? could you have been receding? could he have been receding? could we have been receding? could you have been receding? could they have been receding?

Interro-negative form

Simple form	V-ing form
couldn't I recede? couldn't you recede? couldn't he recede? couldn't we recede? couldn't you recede? couldn't they recede?	couldn't I be receding? couldn't you be receding? couldn't he be receding? couldn't we be receding? couldn't you be receding? couldn't they be receding?
Perfect	V-ing perfect
couldn't I have receded? couldn't you have receded? couldn't he have receded? couldn't we have receded? couldn't you have receded? couldn't they have receded?	couldn't I have been receding? couldn't you have been receding? couldn't he have been receding? couldn't we have been receding? couldn't you have been receding? couldn't they have been receding?