English verb conjugation
COULD ESCAPE

Regular verb: escape - escaped - escaped

Affirmation

Simple form	V-ing form
I could escape you could escape he could escape we could escape you could escape they could escape	I could be escaping you could be escaping he could be escaping we could be escaping you could be escaping they could be escaping
Perfect	V-ing perfect
I could have escaped you could have escaped he could have escaped we could have escaped you could have escaped they could have escaped	I could have been escaping you could have been escaping he could have been escaping we could have been escaping you could have been escaping they could have been escaping

Negation

Simple form	V-ing form
I couldn't escape you couldn't escape he couldn't escape we couldn't escape you couldn't escape they couldn't escape	I couldn't be escaping you couldn't be escaping he couldn't be escaping we couldn't be escaping you couldn't be escaping they couldn't be escaping
Perfect	V-ing perfect
I couldn't have escaped you couldn't have escaped he couldn't have escaped we couldn't have escaped you couldn't have escaped they couldn't have escaped	I couldn't have been escaping you couldn't have been escaping he couldn't have been escaping we couldn't have been escaping you couldn't have been escaping they couldn't have been escaping

Interrogative form

Simple form	V-ing form
could I escape? could you escape? could he escape? could we escape? could you escape? could they escape?	could I be escaping? could you be escaping? could he be escaping? could we be escaping? could you be escaping? could they be escaping?
Perfect	V-ing perfect
could I have escaped? could you have escaped? could he have escaped? could we have escaped? could you have escaped? could they have escaped?	could I have been escaping? could you have been escaping? could he have been escaping? could we have been escaping? could you have been escaping? could they have been escaping?

Interro-negative form

Simple form	V-ing form
couldn't I escape? couldn't you escape? couldn't he escape? couldn't we escape? couldn't you escape? couldn't they escape?	couldn't I be escaping? couldn't you be escaping? couldn't he be escaping? couldn't we be escaping? couldn't you be escaping? couldn't they be escaping?
Perfect	V-ing perfect
couldn't I have escaped? couldn't you have escaped? couldn't he have escaped? couldn't we have escaped? couldn't you have escaped? couldn't they have escaped?	couldn't I have been escaping? couldn't you have been escaping? couldn't he have been escaping? couldn't we have been escaping? couldn't you have been escaping? couldn't they have been escaping?