could obsolesce
Verbe régulier : obsolesce - obsolesced- obsolesced

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could obsolesce
you could obsolesce
she could obsolesce
we could obsolesce
you could obsolesce
they could obsolesce 	I could be obsolescing
you could be obsolescing
she could be obsolescing
we could be obsolescing
you could be obsolescing
they could be obsolescing	I could have obsolesced
you could have obsolesced
she could have obsolesced
we could have obsolesced
you could have obsolesced
they could have obsolesced	I could have been obsolescing
you could have been obsolescing
she could have been obsolescing
we could have been obsolescing
you could have been obsolescing
they could have been obsolescing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't obsolesce
you couldn't obsolesce
she couldn't obsolesce
we couldn't obsolesce
you couldn't obsolesce
they couldn't obsolesce 	I couldn't be obsolescing
you couldn't be obsolescing
she couldn't be obsolescing
we couldn't be obsolescing
you couldn't be obsolescing
they couldn't be obsolescing	I couldn't have obsolesced
you couldn't have obsolesced
she couldn't have obsolesced
we couldn't have obsolesced
you couldn't have obsolesced
they couldn't have obsolesced	I couldn't have been obsolescing
you couldn't have been obsolescing
she couldn't have been obsolescing
we couldn't have been obsolescing
you couldn't have been obsolescing
they couldn't have been obsolescing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I obsolesce?
could you obsolesce?
could she obsolesce?
could we obsolesce?
could you obsolesce?
could they obsolesce? 	could I be obsolescing?
could you be obsolescing?
could she be obsolescing?
could we be obsolescing?
could you be obsolescing?
could they be obsolescing? 	could I have obsolesced?
could you have obsolesced?
could she have obsolesced?
could we have obsolesced?
could you have obsolesced?
could they have obsolesced? 	could I have been obsolescing?
could you have been obsolescing?
could she have been obsolescing?
could we have been obsolescing?
could you have been obsolescing?
could they have been obsolescing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I obsolesce?
couldn't you obsolesce?
couldn't she obsolesce?
couldn't we obsolesce?
couldn't you obsolesce?
couldn't they obsolesce? 	couldn't I be obsolescing?
couldn't you be obsolescing?
couldn't she be obsolescing?
couldn't we be obsolescing?
couldn't you be obsolescing?
couldn't they be obsolescing? 	couldn't I have obsolesced?
couldn't you have obsolesced?
couldn't she have obsolesced?
couldn't we have obsolesced?
couldn't you have obsolesced?
couldn't they have obsolesced? 	couldn't I have been obsolescing?
couldn't you have been obsolescing?
couldn't she have been obsolescing?
couldn't we have been obsolescing?
couldn't you have been obsolescing?
couldn't they have been obsolescing?