could lithify
Verbe régulier : lithify - lithified- lithified

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could lithify
you could lithify
he could lithify
we could lithify
you could lithify
they could lithify 	I could be lithifying
you could be lithifying
he could be lithifying
we could be lithifying
you could be lithifying
they could be lithifying	I could have lithified
you could have lithified
he could have lithified
we could have lithified
you could have lithified
they could have lithified	I could have been lithifying
you could have been lithifying
he could have been lithifying
we could have been lithifying
you could have been lithifying
they could have been lithifying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't lithify
you couldn't lithify
he couldn't lithify
we couldn't lithify
you couldn't lithify
they couldn't lithify 	I couldn't be lithifying
you couldn't be lithifying
he couldn't be lithifying
we couldn't be lithifying
you couldn't be lithifying
they couldn't be lithifying	I couldn't have lithified
you couldn't have lithified
he couldn't have lithified
we couldn't have lithified
you couldn't have lithified
they couldn't have lithified	I couldn't have been lithifying
you couldn't have been lithifying
he couldn't have been lithifying
we couldn't have been lithifying
you couldn't have been lithifying
they couldn't have been lithifying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I lithify?
could you lithify?
could he lithify?
could we lithify?
could you lithify?
could they lithify? 	could I be lithifying?
could you be lithifying?
could he be lithifying?
could we be lithifying?
could you be lithifying?
could they be lithifying? 	could I have lithified?
could you have lithified?
could he have lithified?
could we have lithified?
could you have lithified?
could they have lithified? 	could I have been lithifying?
could you have been lithifying?
could he have been lithifying?
could we have been lithifying?
could you have been lithifying?
could they have been lithifying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I lithify?
couldn't you lithify?
couldn't he lithify?
couldn't we lithify?
couldn't you lithify?
couldn't they lithify? 	couldn't I be lithifying?
couldn't you be lithifying?
couldn't he be lithifying?
couldn't we be lithifying?
couldn't you be lithifying?
couldn't they be lithifying? 	couldn't I have lithified?
couldn't you have lithified?
couldn't he have lithified?
couldn't we have lithified?
couldn't you have lithified?
couldn't they have lithified? 	couldn't I have been lithifying?
couldn't you have been lithifying?
couldn't he have been lithifying?
couldn't we have been lithifying?
couldn't you have been lithifying?
couldn't they have been lithifying?