I could mispronounce you could mispronounce he could mispronounce we could mispronounce you could mispronounce they could mispronounce
V-ing form
I could be mispronouncing you could be mispronouncing he could be mispronouncing we could be mispronouncing you could be mispronouncing they could be mispronouncing
Perfect
I could have mispronounced you could have mispronounced he could have mispronounced we could have mispronounced you could have mispronounced they could have mispronounced
V-ing perfect
I could have been mispronouncing you could have been mispronouncing he could have been mispronouncing we could have been mispronouncing you could have been mispronouncing they could have been mispronouncing
Negation
Simple form
I could not mispronounce you could not mispronounce he could not mispronounce we could not mispronounce you could not mispronounce they could not mispronounce
V-ing form
I could not be mispronouncing you could not be mispronouncing he could not be mispronouncing we could not be mispronouncing you could not be mispronouncing they could not be mispronouncing
Perfect
I could not have mispronounced you could not have mispronounced he could not have mispronounced we could not have mispronounced you could not have mispronounced they could not have mispronounced
V-ing perfect
I could not have been mispronouncing you could not have been mispronouncing he could not have been mispronouncing we could not have been mispronouncing you could not have been mispronouncing they could not have been mispronouncing
Interrogative form
Simple form
could I mispronounce? could you mispronounce? could he mispronounce? could we mispronounce? could you mispronounce? could they mispronounce?
V-ing form
could I be mispronouncing? could you be mispronouncing? could he be mispronouncing? could we be mispronouncing? could you be mispronouncing? could they be mispronouncing?
Perfect
could I have mispronounced? could you have mispronounced? could he have mispronounced? could we have mispronounced? could you have mispronounced? could they have mispronounced?
V-ing perfect
could I have been mispronouncing? could you have been mispronouncing? could he have been mispronouncing? could we have been mispronouncing? could you have been mispronouncing? could they have been mispronouncing?
Interro-negative form
Simple form
could I not mispronounce? could you not mispronounce? could he not mispronounce? could we not mispronounce? could you not mispronounce? could they not mispronounce?
V-ing form
could I not be mispronouncing? could you not be mispronouncing? could he not be mispronouncing? could we not be mispronouncing? could you not be mispronouncing? could they not be mispronouncing?
Perfect
could I not have mispronounced? could you not have mispronounced? could he not have mispronounced? could we not have mispronounced? could you not have mispronounced? could they not have mispronounced?
V-ing perfect
could I not have been mispronouncing? could you not have been mispronouncing? could he not have been mispronouncing? could we not have been mispronouncing? could you not have been mispronouncing? could they not have been mispronouncing?