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