can prealter
Verbe régulier : prealter - prealtered- prealtered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can prealter
you can prealter
he can prealter
we can prealter
you can prealter
they can prealter 	I can be prealtering
you can be prealtering
he can be prealtering
we can be prealtering
you can be prealtering
they can be prealtering	I can have prealtered
you can have prealtered
he can have prealtered
we can have prealtered
you can have prealtered
they can have prealtered	I can have been prealtering
you can have been prealtering
he can have been prealtering
we can have been prealtering
you can have been prealtering
they can have been prealtering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't prealter
you can't prealter
he can't prealter
we can't prealter
you can't prealter
they can't prealter 	I can't be prealtering
you can't be prealtering
he can't be prealtering
we can't be prealtering
you can't be prealtering
they can't be prealtering	I can't have prealtered
you can't have prealtered
he can't have prealtered
we can't have prealtered
you can't have prealtered
they can't have prealtered	I can't have been prealtering
you can't have been prealtering
he can't have been prealtering
we can't have been prealtering
you can't have been prealtering
they can't have been prealtering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I prealter?
can you prealter?
can he prealter?
can we prealter?
can you prealter?
can they prealter? 	can I be prealtering?
can you be prealtering?
can he be prealtering?
can we be prealtering?
can you be prealtering?
can they be prealtering? 	can I have prealtered?
can you have prealtered?
can he have prealtered?
can we have prealtered?
can you have prealtered?
can they have prealtered? 	can I have been prealtering?
can you have been prealtering?
can he have been prealtering?
can we have been prealtering?
can you have been prealtering?
can they have been prealtering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can't I prealter?
can't you prealter?
can't he prealter?
can't we prealter?
can't you prealter?
can't they prealter? 	can't I be prealtering?
can't you be prealtering?
can't he be prealtering?
can't we be prealtering?
can't you be prealtering?
can't they be prealtering? 	can't I have prealtered?
can't you have prealtered?
can't he have prealtered?
can't we have prealtered?
can't you have prealtered?
can't they have prealtered? 	can't I have been prealtering?
can't you have been prealtering?
can't he have been prealtering?
can't we have been prealtering?
can't you have been prealtering?
can't they have been prealtering?