can countersign
Verbe régulier : countersign - countersigned- countersigned
Traduction française : contresigner 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can countersign
you can countersign
she can countersign
we can countersign
you can countersign
they can countersign 	I can be countersigning
you can be countersigning
she can be countersigning
we can be countersigning
you can be countersigning
they can be countersigning	I can have countersigned
you can have countersigned
she can have countersigned
we can have countersigned
you can have countersigned
they can have countersigned	I can have been countersigning
you can have been countersigning
she can have been countersigning
we can have been countersigning
you can have been countersigning
they can have been countersigning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't countersign
you can't countersign
she can't countersign
we can't countersign
you can't countersign
they can't countersign 	I can't be countersigning
you can't be countersigning
she can't be countersigning
we can't be countersigning
you can't be countersigning
they can't be countersigning	I can't have countersigned
you can't have countersigned
she can't have countersigned
we can't have countersigned
you can't have countersigned
they can't have countersigned	I can't have been countersigning
you can't have been countersigning
she can't have been countersigning
we can't have been countersigning
you can't have been countersigning
they can't have been countersigning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I countersign?
can you countersign?
can she countersign?
can we countersign?
can you countersign?
can they countersign? 	can I be countersigning?
can you be countersigning?
can she be countersigning?
can we be countersigning?
can you be countersigning?
can they be countersigning? 	can I have countersigned?
can you have countersigned?
can she have countersigned?
can we have countersigned?
can you have countersigned?
can they have countersigned? 	can I have been countersigning?
can you have been countersigning?
can she have been countersigning?
can we have been countersigning?
can you have been countersigning?
can they have been countersigning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can't I countersign?
can't you countersign?
can't she countersign?
can't we countersign?
can't you countersign?
can't they countersign? 	can't I be countersigning?
can't you be countersigning?
can't she be countersigning?
can't we be countersigning?
can't you be countersigning?
can't they be countersigning? 	can't I have countersigned?
can't you have countersigned?
can't she have countersigned?
can't we have countersigned?
can't you have countersigned?
can't they have countersigned? 	can't I have been countersigning?
can't you have been countersigning?
can't she have been countersigning?
can't we have been countersigning?
can't you have been countersigning?
can't they have been countersigning?