English verb conjugation
COULD STRESS

Regular verb: stress - stressed - stressed

Affirmation

Simple form	V-ing form
I could stress you could stress she could stress we could stress you could stress they could stress	I could be stressing you could be stressing she could be stressing we could be stressing you could be stressing they could be stressing
Perfect	V-ing perfect
I could have stressed you could have stressed she could have stressed we could have stressed you could have stressed they could have stressed	I could have been stressing you could have been stressing she could have been stressing we could have been stressing you could have been stressing they could have been stressing

Negation

Simple form	V-ing form
I couldn't stress you couldn't stress she couldn't stress we couldn't stress you couldn't stress they couldn't stress	I couldn't be stressing you couldn't be stressing she couldn't be stressing we couldn't be stressing you couldn't be stressing they couldn't be stressing
Perfect	V-ing perfect
I couldn't have stressed you couldn't have stressed she couldn't have stressed we couldn't have stressed you couldn't have stressed they couldn't have stressed	I couldn't have been stressing you couldn't have been stressing she couldn't have been stressing we couldn't have been stressing you couldn't have been stressing they couldn't have been stressing

Interrogative form

Simple form	V-ing form
could I stress? could you stress? could she stress? could we stress? could you stress? could they stress?	could I be stressing? could you be stressing? could she be stressing? could we be stressing? could you be stressing? could they be stressing?
Perfect	V-ing perfect
could I have stressed? could you have stressed? could she have stressed? could we have stressed? could you have stressed? could they have stressed?	could I have been stressing? could you have been stressing? could she have been stressing? could we have been stressing? could you have been stressing? could they have been stressing?

Interro-negative form

Simple form	V-ing form
couldn't I stress? couldn't you stress? couldn't she stress? couldn't we stress? couldn't you stress? couldn't they stress?	couldn't I be stressing? couldn't you be stressing? couldn't she be stressing? couldn't we be stressing? couldn't you be stressing? couldn't they be stressing?
Perfect	V-ing perfect
couldn't I have stressed? couldn't you have stressed? couldn't she have stressed? couldn't we have stressed? couldn't you have stressed? couldn't they have stressed?	couldn't I have been stressing? couldn't you have been stressing? couldn't she have been stressing? couldn't we have been stressing? couldn't you have been stressing? couldn't they have been stressing?