I could somnambulate you could somnambulate she could somnambulate we could somnambulate you could somnambulate they could somnambulate
V-ing form
I could be somnambulating you could be somnambulating she could be somnambulating we could be somnambulating you could be somnambulating they could be somnambulating
Perfect
I could have somnambulated you could have somnambulated she 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 she 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 she 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 she 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 she 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 she 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 she somnambulate? could we somnambulate? could you somnambulate? could they somnambulate?
V-ing form
could I be somnambulating? could you be somnambulating? could she be somnambulating? could we be somnambulating? could you be somnambulating? could they be somnambulating?
Perfect
could I have somnambulated? could you have somnambulated? could she 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 she 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 she 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 she 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 she 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 she have been somnambulating? couldn't we have been somnambulating? couldn't you have been somnambulating? couldn't they have been somnambulating?