English verb conjugation
CAN RECERTIFY

Regular verb: recertify - recertified - recertified

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?