can recertify
Regular verb: recertify - recertified- recertified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can recertify
you can recertify
he can recertify
we can recertify
you can recertify
they can recertify 	I can be recertifying
you can be recertifying
he can be recertifying
we can be recertifying
you can be recertifying
they can be recertifying	I can have recertified
you can have recertified
he can have recertified
we can have recertified
you can have recertified
they can have recertified	I can have been recertifying
you can have been recertifying
he can have been recertifying
we can have been recertifying
you can have been recertifying
they can have been recertifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't recertify
you can't recertify
he can't recertify
we can't recertify
you can't recertify
they can't recertify 	I can't be recertifying
you can't be recertifying
he can't be recertifying
we can't be recertifying
you can't be recertifying
they can't be recertifying	I can't have recertified
you can't have recertified
he can't have recertified
we can't have recertified
you can't have recertified
they can't have recertified	I can't have been recertifying
you can't have been recertifying
he can't have been recertifying
we can't have been recertifying
you can't have been recertifying
they can't have been recertifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I recertify?
can you recertify?
can he recertify?
can we recertify?
can you recertify?
can they recertify? 	can I be recertifying?
can you be recertifying?
can he be recertifying?
can we be recertifying?
can you be recertifying?
can they be recertifying? 	can I have recertified?
can you have recertified?
can he have recertified?
can we have recertified?
can you have recertified?
can they have recertified? 	can I have been recertifying?
can you have been recertifying?
can he have been recertifying?
can we have been recertifying?
can you have been recertifying?
can they have been recertifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I recertify?
can't you recertify?
can't he recertify?
can't we recertify?
can't you recertify?
can't they recertify? 	can't I be recertifying?
can't you be recertifying?
can't he be recertifying?
can't we be recertifying?
can't you be recertifying?
can't they be recertifying? 	can't I have recertified?
can't you have recertified?
can't he have recertified?
can't we have recertified?
can't you have recertified?
can't they have recertified? 	can't I have been recertifying?
can't you have been recertifying?
can't he have been recertifying?
can't we have been recertifying?
can't you have been recertifying?
can't they have been recertifying?