could effervesce
Verbo regular: effervesce - effervesced- effervesced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could effervesce
you could effervesce
she could effervesce
we could effervesce
you could effervesce
they could effervesce 	I could be effervescing
you could be effervescing
she could be effervescing
we could be effervescing
you could be effervescing
they could be effervescing	I could have effervesced
you could have effervesced
she could have effervesced
we could have effervesced
you could have effervesced
they could have effervesced	I could have been effervescing
you could have been effervescing
she could have been effervescing
we could have been effervescing
you could have been effervescing
they could have been effervescing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't effervesce
you couldn't effervesce
she couldn't effervesce
we couldn't effervesce
you couldn't effervesce
they couldn't effervesce 	I couldn't be effervescing
you couldn't be effervescing
she couldn't be effervescing
we couldn't be effervescing
you couldn't be effervescing
they couldn't be effervescing	I couldn't have effervesced
you couldn't have effervesced
she couldn't have effervesced
we couldn't have effervesced
you couldn't have effervesced
they couldn't have effervesced	I couldn't have been effervescing
you couldn't have been effervescing
she couldn't have been effervescing
we couldn't have been effervescing
you couldn't have been effervescing
they couldn't have been effervescing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I effervesce?
could you effervesce?
could she effervesce?
could we effervesce?
could you effervesce?
could they effervesce? 	could I be effervescing?
could you be effervescing?
could she be effervescing?
could we be effervescing?
could you be effervescing?
could they be effervescing? 	could I have effervesced?
could you have effervesced?
could she have effervesced?
could we have effervesced?
could you have effervesced?
could they have effervesced? 	could I have been effervescing?
could you have been effervescing?
could she have been effervescing?
could we have been effervescing?
could you have been effervescing?
could they have been effervescing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I effervesce?
couldn't you effervesce?
couldn't she effervesce?
couldn't we effervesce?
couldn't you effervesce?
couldn't they effervesce? 	couldn't I be effervescing?
couldn't you be effervescing?
couldn't she be effervescing?
couldn't we be effervescing?
couldn't you be effervescing?
couldn't they be effervescing? 	couldn't I have effervesced?
couldn't you have effervesced?
couldn't she have effervesced?
couldn't we have effervesced?
couldn't you have effervesced?
couldn't they have effervesced? 	couldn't I have been effervescing?
couldn't you have been effervescing?
couldn't she have been effervescing?
couldn't we have been effervescing?
couldn't you have been effervescing?
couldn't they have been effervescing?