can tiff
Verbe régulier : tiff - tiffed- tiffed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can tiff
you can tiff
he can tiff
we can tiff
you can tiff
they can tiff 	I can be tiffing
you can be tiffing
he can be tiffing
we can be tiffing
you can be tiffing
they can be tiffing	I can have tiffed
you can have tiffed
he can have tiffed
we can have tiffed
you can have tiffed
they can have tiffed	I can have been tiffing
you can have been tiffing
he can have been tiffing
we can have been tiffing
you can have been tiffing
they can have been tiffing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot tiff
you cannot tiff
he cannot tiff
we cannot tiff
you cannot tiff
they cannot tiff 	I cannot be tiffing
you cannot be tiffing
he cannot be tiffing
we cannot be tiffing
you cannot be tiffing
they cannot be tiffing	I cannot have tiffed
you cannot have tiffed
he cannot have tiffed
we cannot have tiffed
you cannot have tiffed
they cannot have tiffed	I cannot have been tiffing
you cannot have been tiffing
he cannot have been tiffing
we cannot have been tiffing
you cannot have been tiffing
they cannot have been tiffing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I tiff?
can you tiff?
can he tiff?
can we tiff?
can you tiff?
can they tiff? 	can I be tiffing?
can you be tiffing?
can he be tiffing?
can we be tiffing?
can you be tiffing?
can they be tiffing? 	can I have tiffed?
can you have tiffed?
can he have tiffed?
can we have tiffed?
can you have tiffed?
can they have tiffed? 	can I have been tiffing?
can you have been tiffing?
can he have been tiffing?
can we have been tiffing?
can you have been tiffing?
can they have been tiffing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not tiff?
can you not tiff?
can he not tiff?
can we not tiff?
can you not tiff?
can they not tiff? 	can I not be tiffing?
can you not be tiffing?
can he not be tiffing?
can we not be tiffing?
can you not be tiffing?
can they not be tiffing? 	can I not have tiffed?
can you not have tiffed?
can he not have tiffed?
can we not have tiffed?
can you not have tiffed?
can they not have tiffed? 	can I not have been tiffing?
can you not have been tiffing?
can he not have been tiffing?
can we not have been tiffing?
can you not have been tiffing?
can they not have been tiffing?