could thumb-index
Verbe régulier : thumb-index - thumb-indexed- thumb-indexed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could thumb-index
you could thumb-index
he could thumb-index
we could thumb-index
you could thumb-index
they could thumb-index 	I could be thumb-indexing
you could be thumb-indexing
he could be thumb-indexing
we could be thumb-indexing
you could be thumb-indexing
they could be thumb-indexing	I could have thumb-indexed
you could have thumb-indexed
he could have thumb-indexed
we could have thumb-indexed
you could have thumb-indexed
they could have thumb-indexed	I could have been thumb-indexing
you could have been thumb-indexing
he could have been thumb-indexing
we could have been thumb-indexing
you could have been thumb-indexing
they could have been thumb-indexing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't thumb-index
you couldn't thumb-index
he couldn't thumb-index
we couldn't thumb-index
you couldn't thumb-index
they couldn't thumb-index 	I couldn't be thumb-indexing
you couldn't be thumb-indexing
he couldn't be thumb-indexing
we couldn't be thumb-indexing
you couldn't be thumb-indexing
they couldn't be thumb-indexing	I couldn't have thumb-indexed
you couldn't have thumb-indexed
he couldn't have thumb-indexed
we couldn't have thumb-indexed
you couldn't have thumb-indexed
they couldn't have thumb-indexed	I couldn't have been thumb-indexing
you couldn't have been thumb-indexing
he couldn't have been thumb-indexing
we couldn't have been thumb-indexing
you couldn't have been thumb-indexing
they couldn't have been thumb-indexing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I thumb-index?
could you thumb-index?
could he thumb-index?
could we thumb-index?
could you thumb-index?
could they thumb-index? 	could I be thumb-indexing?
could you be thumb-indexing?
could he be thumb-indexing?
could we be thumb-indexing?
could you be thumb-indexing?
could they be thumb-indexing? 	could I have thumb-indexed?
could you have thumb-indexed?
could he have thumb-indexed?
could we have thumb-indexed?
could you have thumb-indexed?
could they have thumb-indexed? 	could I have been thumb-indexing?
could you have been thumb-indexing?
could he have been thumb-indexing?
could we have been thumb-indexing?
could you have been thumb-indexing?
could they have been thumb-indexing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I thumb-index?
couldn't you thumb-index?
couldn't he thumb-index?
couldn't we thumb-index?
couldn't you thumb-index?
couldn't they thumb-index? 	couldn't I be thumb-indexing?
couldn't you be thumb-indexing?
couldn't he be thumb-indexing?
couldn't we be thumb-indexing?
couldn't you be thumb-indexing?
couldn't they be thumb-indexing? 	couldn't I have thumb-indexed?
couldn't you have thumb-indexed?
couldn't he have thumb-indexed?
couldn't we have thumb-indexed?
couldn't you have thumb-indexed?
couldn't they have thumb-indexed? 	couldn't I have been thumb-indexing?
couldn't you have been thumb-indexing?
couldn't he have been thumb-indexing?
couldn't we have been thumb-indexing?
couldn't you have been thumb-indexing?
couldn't they have been thumb-indexing?