could extemporise
Verbe régulier : extemporise - extemporised- extemporised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could extemporise
you could extemporise
he could extemporise
we could extemporise
you could extemporise
they could extemporise 	I could be extemporising
you could be extemporising
he could be extemporising
we could be extemporising
you could be extemporising
they could be extemporising	I could have extemporised
you could have extemporised
he could have extemporised
we could have extemporised
you could have extemporised
they could have extemporised	I could have been extemporising
you could have been extemporising
he could have been extemporising
we could have been extemporising
you could have been extemporising
they could have been extemporising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't extemporise
you couldn't extemporise
he couldn't extemporise
we couldn't extemporise
you couldn't extemporise
they couldn't extemporise 	I couldn't be extemporising
you couldn't be extemporising
he couldn't be extemporising
we couldn't be extemporising
you couldn't be extemporising
they couldn't be extemporising	I couldn't have extemporised
you couldn't have extemporised
he couldn't have extemporised
we couldn't have extemporised
you couldn't have extemporised
they couldn't have extemporised	I couldn't have been extemporising
you couldn't have been extemporising
he couldn't have been extemporising
we couldn't have been extemporising
you couldn't have been extemporising
they couldn't have been extemporising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I extemporise?
could you extemporise?
could he extemporise?
could we extemporise?
could you extemporise?
could they extemporise? 	could I be extemporising?
could you be extemporising?
could he be extemporising?
could we be extemporising?
could you be extemporising?
could they be extemporising? 	could I have extemporised?
could you have extemporised?
could he have extemporised?
could we have extemporised?
could you have extemporised?
could they have extemporised? 	could I have been extemporising?
could you have been extemporising?
could he have been extemporising?
could we have been extemporising?
could you have been extemporising?
could they have been extemporising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I extemporise?
couldn't you extemporise?
couldn't he extemporise?
couldn't we extemporise?
couldn't you extemporise?
couldn't they extemporise? 	couldn't I be extemporising?
couldn't you be extemporising?
couldn't he be extemporising?
couldn't we be extemporising?
couldn't you be extemporising?
couldn't they be extemporising? 	couldn't I have extemporised?
couldn't you have extemporised?
couldn't he have extemporised?
couldn't we have extemporised?
couldn't you have extemporised?
couldn't they have extemporised? 	couldn't I have been extemporising?
couldn't you have been extemporising?
couldn't he have been extemporising?
couldn't we have been extemporising?
couldn't you have been extemporising?
couldn't they have been extemporising?