could notice
Regular verb: notice - noticed- noticed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could notice
you could notice
she could notice
we could notice
you could notice
they could notice 	I could be noticing
you could be noticing
she could be noticing
we could be noticing
you could be noticing
they could be noticing	I could have noticed
you could have noticed
she could have noticed
we could have noticed
you could have noticed
they could have noticed	I could have been noticing
you could have been noticing
she could have been noticing
we could have been noticing
you could have been noticing
they could have been noticing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not notice
you could not notice
she could not notice
we could not notice
you could not notice
they could not notice 	I could not be noticing
you could not be noticing
she could not be noticing
we could not be noticing
you could not be noticing
they could not be noticing	I could not have noticed
you could not have noticed
she could not have noticed
we could not have noticed
you could not have noticed
they could not have noticed	I could not have been noticing
you could not have been noticing
she could not have been noticing
we could not have been noticing
you could not have been noticing
they could not have been noticing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I notice?
could you notice?
could she notice?
could we notice?
could you notice?
could they notice? 	could I be noticing?
could you be noticing?
could she be noticing?
could we be noticing?
could you be noticing?
could they be noticing? 	could I have noticed?
could you have noticed?
could she have noticed?
could we have noticed?
could you have noticed?
could they have noticed? 	could I have been noticing?
could you have been noticing?
could she have been noticing?
could we have been noticing?
could you have been noticing?
could they have been noticing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not notice?
could you not notice?
could she not notice?
could we not notice?
could you not notice?
could they not notice? 	could I not be noticing?
could you not be noticing?
could she not be noticing?
could we not be noticing?
could you not be noticing?
could they not be noticing? 	could I not have noticed?
could you not have noticed?
could she not have noticed?
could we not have noticed?
could you not have noticed?
could they not have noticed? 	could I not have been noticing?
could you not have been noticing?
could she not have been noticing?
could we not have been noticing?
could you not have been noticing?
could they not have been noticing?