can countersink
Verbe irrégulier : countersink - countersank- countersunk

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can countersink
you can countersink
he can countersink
we can countersink
you can countersink
they can countersink 	I can be countersinking
you can be countersinking
he can be countersinking
we can be countersinking
you can be countersinking
they can be countersinking	I can have countersunk
you can have countersunk
he can have countersunk
we can have countersunk
you can have countersunk
they can have countersunk	I can have been countersinking
you can have been countersinking
he can have been countersinking
we can have been countersinking
you can have been countersinking
they can have been countersinking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot countersink
you cannot countersink
he cannot countersink
we cannot countersink
you cannot countersink
they cannot countersink 	I cannot be countersinking
you cannot be countersinking
he cannot be countersinking
we cannot be countersinking
you cannot be countersinking
they cannot be countersinking	I cannot have countersunk
you cannot have countersunk
he cannot have countersunk
we cannot have countersunk
you cannot have countersunk
they cannot have countersunk	I cannot have been countersinking
you cannot have been countersinking
he cannot have been countersinking
we cannot have been countersinking
you cannot have been countersinking
they cannot have been countersinking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I countersink?
can you countersink?
can he countersink?
can we countersink?
can you countersink?
can they countersink? 	can I be countersinking?
can you be countersinking?
can he be countersinking?
can we be countersinking?
can you be countersinking?
can they be countersinking? 	can I have countersunk?
can you have countersunk?
can he have countersunk?
can we have countersunk?
can you have countersunk?
can they have countersunk? 	can I have been countersinking?
can you have been countersinking?
can he have been countersinking?
can we have been countersinking?
can you have been countersinking?
can they have been countersinking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not countersink?
can you not countersink?
can he not countersink?
can we not countersink?
can you not countersink?
can they not countersink? 	can I not be countersinking?
can you not be countersinking?
can he not be countersinking?
can we not be countersinking?
can you not be countersinking?
can they not be countersinking? 	can I not have countersunk?
can you not have countersunk?
can he not have countersunk?
can we not have countersunk?
can you not have countersunk?
can they not have countersunk? 	can I not have been countersinking?
can you not have been countersinking?
can he not have been countersinking?
can we not have been countersinking?
can you not have been countersinking?
can they not have been countersinking?