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