I could simulate you could simulate he could simulate we could simulate you could simulate they could simulate
V-ing form
I could be simulating you could be simulating he could be simulating we could be simulating you could be simulating they could be simulating
Perfect
I could have simulated you could have simulated he could have simulated we could have simulated you could have simulated they could have simulated
V-ing perfect
I could have been simulating you could have been simulating he could have been simulating we could have been simulating you could have been simulating they could have been simulating
Negation
Simple form
I could not simulate you could not simulate he could not simulate we could not simulate you could not simulate they could not simulate
V-ing form
I could not be simulating you could not be simulating he could not be simulating we could not be simulating you could not be simulating they could not be simulating
Perfect
I could not have simulated you could not have simulated he could not have simulated we could not have simulated you could not have simulated they could not have simulated
V-ing perfect
I could not have been simulating you could not have been simulating he could not have been simulating we could not have been simulating you could not have been simulating they could not have been simulating
Interrogative form
Simple form
could I simulate? could you simulate? could he simulate? could we simulate? could you simulate? could they simulate?
V-ing form
could I be simulating? could you be simulating? could he be simulating? could we be simulating? could you be simulating? could they be simulating?
Perfect
could I have simulated? could you have simulated? could he have simulated? could we have simulated? could you have simulated? could they have simulated?
V-ing perfect
could I have been simulating? could you have been simulating? could he have been simulating? could we have been simulating? could you have been simulating? could they have been simulating?
Interro-negative form
Simple form
could I not simulate? could you not simulate? could he not simulate? could we not simulate? could you not simulate? could they not simulate?
V-ing form
could I not be simulating? could you not be simulating? could he not be simulating? could we not be simulating? could you not be simulating? could they not be simulating?
Perfect
could I not have simulated? could you not have simulated? could he not have simulated? could we not have simulated? could you not have simulated? could they not have simulated?
V-ing perfect
could I not have been simulating? could you not have been simulating? could he not have been simulating? could we not have been simulating? could you not have been simulating? could they not have been simulating?