I could egress you could egress he could egress we could egress you could egress they could egress
V-ing form
I could be egressing you could be egressing he could be egressing we could be egressing you could be egressing they could be egressing
Perfect
I could have egressed you could have egressed he could have egressed we could have egressed you could have egressed they could have egressed
V-ing perfect
I could have been egressing you could have been egressing he could have been egressing we could have been egressing you could have been egressing they could have been egressing
Negation
Simple form
I couldn't egress you couldn't egress he couldn't egress we couldn't egress you couldn't egress they couldn't egress
V-ing form
I couldn't be egressing you couldn't be egressing he couldn't be egressing we couldn't be egressing you couldn't be egressing they couldn't be egressing
Perfect
I couldn't have egressed you couldn't have egressed he couldn't have egressed we couldn't have egressed you couldn't have egressed they couldn't have egressed
V-ing perfect
I couldn't have been egressing you couldn't have been egressing he couldn't have been egressing we couldn't have been egressing you couldn't have been egressing they couldn't have been egressing
Interrogative form
Simple form
could I egress? could you egress? could he egress? could we egress? could you egress? could they egress?
V-ing form
could I be egressing? could you be egressing? could he be egressing? could we be egressing? could you be egressing? could they be egressing?
Perfect
could I have egressed? could you have egressed? could he have egressed? could we have egressed? could you have egressed? could they have egressed?
V-ing perfect
could I have been egressing? could you have been egressing? could he have been egressing? could we have been egressing? could you have been egressing? could they have been egressing?
Interro-negative form
Simple form
couldn't I egress? couldn't you egress? couldn't he egress? couldn't we egress? couldn't you egress? couldn't they egress?
V-ing form
couldn't I be egressing? couldn't you be egressing? couldn't he be egressing? couldn't we be egressing? couldn't you be egressing? couldn't they be egressing?
Perfect
couldn't I have egressed? couldn't you have egressed? couldn't he have egressed? couldn't we have egressed? couldn't you have egressed? couldn't they have egressed?
V-ing perfect
couldn't I have been egressing? couldn't you have been egressing? couldn't he have been egressing? couldn't we have been egressing? couldn't you have been egressing? couldn't they have been egressing?