could obsolesce
Verbo regular: obsolesce - obsolesced- obsolesced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could obsolesce
you could obsolesce
he could obsolesce
we could obsolesce
you could obsolesce
they could obsolesce 	I could be obsolescing
you could be obsolescing
he could be obsolescing
we could be obsolescing
you could be obsolescing
they could be obsolescing	I could have obsolesced
you could have obsolesced
he 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
he could have been obsolescing
we could have been obsolescing
you could have been obsolescing
they could have been obsolescing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not obsolesce
you could not obsolesce
he could not obsolesce
we could not obsolesce
you could not obsolesce
they could not obsolesce 	I could not be obsolescing
you could not be obsolescing
he could not be obsolescing
we could not be obsolescing
you could not be obsolescing
they could not be obsolescing	I could not have obsolesced
you could not have obsolesced
he could not have obsolesced
we could not have obsolesced
you could not have obsolesced
they could not have obsolesced	I could not have been obsolescing
you could not have been obsolescing
he could not have been obsolescing
we could not have been obsolescing
you could not have been obsolescing
they could not have been obsolescing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I obsolesce?
could you obsolesce?
could he obsolesce?
could we obsolesce?
could you obsolesce?
could they obsolesce? 	could I be obsolescing?
could you be obsolescing?
could he be obsolescing?
could we be obsolescing?
could you be obsolescing?
could they be obsolescing? 	could I have obsolesced?
could you have obsolesced?
could he 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 he have been obsolescing?
could we have been obsolescing?
could you have been obsolescing?
could they have been obsolescing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not obsolesce?
could you not obsolesce?
could he not obsolesce?
could we not obsolesce?
could you not obsolesce?
could they not obsolesce? 	could I not be obsolescing?
could you not be obsolescing?
could he not be obsolescing?
could we not be obsolescing?
could you not be obsolescing?
could they not be obsolescing? 	could I not have obsolesced?
could you not have obsolesced?
could he not have obsolesced?
could we not have obsolesced?
could you not have obsolesced?
could they not have obsolesced? 	could I not have been obsolescing?
could you not have been obsolescing?
could he not have been obsolescing?
could we not have been obsolescing?
could you not have been obsolescing?
could they not have been obsolescing?