could encounter
Regular verb: encounter - encountered- encountered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could encounter
you could encounter
she could encounter
we could encounter
you could encounter
they could encounter 	I could be encountering
you could be encountering
she could be encountering
we could be encountering
you could be encountering
they could be encountering	I could have encountered
you could have encountered
she could have encountered
we could have encountered
you could have encountered
they could have encountered	I could have been encountering
you could have been encountering
she could have been encountering
we could have been encountering
you could have been encountering
they could have been encountering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not encounter
you could not encounter
she could not encounter
we could not encounter
you could not encounter
they could not encounter 	I could not be encountering
you could not be encountering
she could not be encountering
we could not be encountering
you could not be encountering
they could not be encountering	I could not have encountered
you could not have encountered
she could not have encountered
we could not have encountered
you could not have encountered
they could not have encountered	I could not have been encountering
you could not have been encountering
she could not have been encountering
we could not have been encountering
you could not have been encountering
they could not have been encountering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I encounter?
could you encounter?
could she encounter?
could we encounter?
could you encounter?
could they encounter? 	could I be encountering?
could you be encountering?
could she be encountering?
could we be encountering?
could you be encountering?
could they be encountering? 	could I have encountered?
could you have encountered?
could she have encountered?
could we have encountered?
could you have encountered?
could they have encountered? 	could I have been encountering?
could you have been encountering?
could she have been encountering?
could we have been encountering?
could you have been encountering?
could they have been encountering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not encounter?
could you not encounter?
could she not encounter?
could we not encounter?
could you not encounter?
could they not encounter? 	could I not be encountering?
could you not be encountering?
could she not be encountering?
could we not be encountering?
could you not be encountering?
could they not be encountering? 	could I not have encountered?
could you not have encountered?
could she not have encountered?
could we not have encountered?
could you not have encountered?
could they not have encountered? 	could I not have been encountering?
could you not have been encountering?
could she not have been encountering?
could we not have been encountering?
could you not have been encountering?
could they not have been encountering?