could decoct
Verbe régulier : decoct - decocted- decocted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could decoct
you could decoct
he could decoct
we could decoct
you could decoct
they could decoct 	I could be decocting
you could be decocting
he could be decocting
we could be decocting
you could be decocting
they could be decocting	I could have decocted
you could have decocted
he could have decocted
we could have decocted
you could have decocted
they could have decocted	I could have been decocting
you could have been decocting
he could have been decocting
we could have been decocting
you could have been decocting
they could have been decocting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't decoct
you couldn't decoct
he couldn't decoct
we couldn't decoct
you couldn't decoct
they couldn't decoct 	I couldn't be decocting
you couldn't be decocting
he couldn't be decocting
we couldn't be decocting
you couldn't be decocting
they couldn't be decocting	I couldn't have decocted
you couldn't have decocted
he couldn't have decocted
we couldn't have decocted
you couldn't have decocted
they couldn't have decocted	I couldn't have been decocting
you couldn't have been decocting
he couldn't have been decocting
we couldn't have been decocting
you couldn't have been decocting
they couldn't have been decocting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I decoct?
could you decoct?
could he decoct?
could we decoct?
could you decoct?
could they decoct? 	could I be decocting?
could you be decocting?
could he be decocting?
could we be decocting?
could you be decocting?
could they be decocting? 	could I have decocted?
could you have decocted?
could he have decocted?
could we have decocted?
could you have decocted?
could they have decocted? 	could I have been decocting?
could you have been decocting?
could he have been decocting?
could we have been decocting?
could you have been decocting?
could they have been decocting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I decoct?
couldn't you decoct?
couldn't he decoct?
couldn't we decoct?
couldn't you decoct?
couldn't they decoct? 	couldn't I be decocting?
couldn't you be decocting?
couldn't he be decocting?
couldn't we be decocting?
couldn't you be decocting?
couldn't they be decocting? 	couldn't I have decocted?
couldn't you have decocted?
couldn't he have decocted?
couldn't we have decocted?
couldn't you have decocted?
couldn't they have decocted? 	couldn't I have been decocting?
couldn't you have been decocting?
couldn't he have been decocting?
couldn't we have been decocting?
couldn't you have been decocting?
couldn't they have been decocting?