could recheck
Regular verb: recheck - rechecked- rechecked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could recheck
you could recheck
she could recheck
we could recheck
you could recheck
they could recheck 	I could be rechecking
you could be rechecking
she could be rechecking
we could be rechecking
you could be rechecking
they could be rechecking	I could have rechecked
you could have rechecked
she could have rechecked
we could have rechecked
you could have rechecked
they could have rechecked	I could have been rechecking
you could have been rechecking
she could have been rechecking
we could have been rechecking
you could have been rechecking
they could have been rechecking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't recheck
you couldn't recheck
she couldn't recheck
we couldn't recheck
you couldn't recheck
they couldn't recheck 	I couldn't be rechecking
you couldn't be rechecking
she couldn't be rechecking
we couldn't be rechecking
you couldn't be rechecking
they couldn't be rechecking	I couldn't have rechecked
you couldn't have rechecked
she couldn't have rechecked
we couldn't have rechecked
you couldn't have rechecked
they couldn't have rechecked	I couldn't have been rechecking
you couldn't have been rechecking
she couldn't have been rechecking
we couldn't have been rechecking
you couldn't have been rechecking
they couldn't have been rechecking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I recheck?
could you recheck?
could she recheck?
could we recheck?
could you recheck?
could they recheck? 	could I be rechecking?
could you be rechecking?
could she be rechecking?
could we be rechecking?
could you be rechecking?
could they be rechecking? 	could I have rechecked?
could you have rechecked?
could she have rechecked?
could we have rechecked?
could you have rechecked?
could they have rechecked? 	could I have been rechecking?
could you have been rechecking?
could she have been rechecking?
could we have been rechecking?
could you have been rechecking?
could they have been rechecking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I recheck?
couldn't you recheck?
couldn't she recheck?
couldn't we recheck?
couldn't you recheck?
couldn't they recheck? 	couldn't I be rechecking?
couldn't you be rechecking?
couldn't she be rechecking?
couldn't we be rechecking?
couldn't you be rechecking?
couldn't they be rechecking? 	couldn't I have rechecked?
couldn't you have rechecked?
couldn't she have rechecked?
couldn't we have rechecked?
couldn't you have rechecked?
couldn't they have rechecked? 	couldn't I have been rechecking?
couldn't you have been rechecking?
couldn't she have been rechecking?
couldn't we have been rechecking?
couldn't you have been rechecking?
couldn't they have been rechecking?