could understock
Verbe régulier : understock - understocked- understocked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could understock
you could understock
she could understock
we could understock
you could understock
they could understock 	I could be understocking
you could be understocking
she could be understocking
we could be understocking
you could be understocking
they could be understocking	I could have understocked
you could have understocked
she could have understocked
we could have understocked
you could have understocked
they could have understocked	I could have been understocking
you could have been understocking
she could have been understocking
we could have been understocking
you could have been understocking
they could have been understocking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't understock
you couldn't understock
she couldn't understock
we couldn't understock
you couldn't understock
they couldn't understock 	I couldn't be understocking
you couldn't be understocking
she couldn't be understocking
we couldn't be understocking
you couldn't be understocking
they couldn't be understocking	I couldn't have understocked
you couldn't have understocked
she couldn't have understocked
we couldn't have understocked
you couldn't have understocked
they couldn't have understocked	I couldn't have been understocking
you couldn't have been understocking
she couldn't have been understocking
we couldn't have been understocking
you couldn't have been understocking
they couldn't have been understocking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I understock?
could you understock?
could she understock?
could we understock?
could you understock?
could they understock? 	could I be understocking?
could you be understocking?
could she be understocking?
could we be understocking?
could you be understocking?
could they be understocking? 	could I have understocked?
could you have understocked?
could she have understocked?
could we have understocked?
could you have understocked?
could they have understocked? 	could I have been understocking?
could you have been understocking?
could she have been understocking?
could we have been understocking?
could you have been understocking?
could they have been understocking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I understock?
couldn't you understock?
couldn't she understock?
couldn't we understock?
couldn't you understock?
couldn't they understock? 	couldn't I be understocking?
couldn't you be understocking?
couldn't she be understocking?
couldn't we be understocking?
couldn't you be understocking?
couldn't they be understocking? 	couldn't I have understocked?
couldn't you have understocked?
couldn't she have understocked?
couldn't we have understocked?
couldn't you have understocked?
couldn't they have understocked? 	couldn't I have been understocking?
couldn't you have been understocking?
couldn't she have been understocking?
couldn't we have been understocking?
couldn't you have been understocking?
couldn't they have been understocking?