could percolate
Verbe régulier : percolate - percolated- percolated
Traduction française : filtrer - préparer (avec une cafetière à pression) 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could percolate
you could percolate
he could percolate
we could percolate
you could percolate
they could percolate 	I could be percolating
you could be percolating
he could be percolating
we could be percolating
you could be percolating
they could be percolating	I could have percolated
you could have percolated
he could have percolated
we could have percolated
you could have percolated
they could have percolated	I could have been percolating
you could have been percolating
he could have been percolating
we could have been percolating
you could have been percolating
they could have been percolating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't percolate
you couldn't percolate
he couldn't percolate
we couldn't percolate
you couldn't percolate
they couldn't percolate 	I couldn't be percolating
you couldn't be percolating
he couldn't be percolating
we couldn't be percolating
you couldn't be percolating
they couldn't be percolating	I couldn't have percolated
you couldn't have percolated
he couldn't have percolated
we couldn't have percolated
you couldn't have percolated
they couldn't have percolated	I couldn't have been percolating
you couldn't have been percolating
he couldn't have been percolating
we couldn't have been percolating
you couldn't have been percolating
they couldn't have been percolating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I percolate?
could you percolate?
could he percolate?
could we percolate?
could you percolate?
could they percolate? 	could I be percolating?
could you be percolating?
could he be percolating?
could we be percolating?
could you be percolating?
could they be percolating? 	could I have percolated?
could you have percolated?
could he have percolated?
could we have percolated?
could you have percolated?
could they have percolated? 	could I have been percolating?
could you have been percolating?
could he have been percolating?
could we have been percolating?
could you have been percolating?
could they have been percolating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I percolate?
couldn't you percolate?
couldn't he percolate?
couldn't we percolate?
couldn't you percolate?
couldn't they percolate? 	couldn't I be percolating?
couldn't you be percolating?
couldn't he be percolating?
couldn't we be percolating?
couldn't you be percolating?
couldn't they be percolating? 	couldn't I have percolated?
couldn't you have percolated?
couldn't he have percolated?
couldn't we have percolated?
couldn't you have percolated?
couldn't they have percolated? 	couldn't I have been percolating?
couldn't you have been percolating?
couldn't he have been percolating?
couldn't we have been percolating?
couldn't you have been percolating?
couldn't they have been percolating?