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