could optimize
Verbo regular: optimize - optimized- optimized

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could optimize
you could optimize
she could optimize
we could optimize
you could optimize
they could optimize 	I could be optimizing
you could be optimizing
she could be optimizing
we could be optimizing
you could be optimizing
they could be optimizing	I could have optimized
you could have optimized
she could have optimized
we could have optimized
you could have optimized
they could have optimized	I could have been optimizing
you could have been optimizing
she could have been optimizing
we could have been optimizing
you could have been optimizing
they could have been optimizing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't optimize
you couldn't optimize
she couldn't optimize
we couldn't optimize
you couldn't optimize
they couldn't optimize 	I couldn't be optimizing
you couldn't be optimizing
she couldn't be optimizing
we couldn't be optimizing
you couldn't be optimizing
they couldn't be optimizing	I couldn't have optimized
you couldn't have optimized
she couldn't have optimized
we couldn't have optimized
you couldn't have optimized
they couldn't have optimized	I couldn't have been optimizing
you couldn't have been optimizing
she couldn't have been optimizing
we couldn't have been optimizing
you couldn't have been optimizing
they couldn't have been optimizing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I optimize?
could you optimize?
could she optimize?
could we optimize?
could you optimize?
could they optimize? 	could I be optimizing?
could you be optimizing?
could she be optimizing?
could we be optimizing?
could you be optimizing?
could they be optimizing? 	could I have optimized?
could you have optimized?
could she have optimized?
could we have optimized?
could you have optimized?
could they have optimized? 	could I have been optimizing?
could you have been optimizing?
could she have been optimizing?
could we have been optimizing?
could you have been optimizing?
could they have been optimizing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I optimize?
couldn't you optimize?
couldn't she optimize?
couldn't we optimize?
couldn't you optimize?
couldn't they optimize? 	couldn't I be optimizing?
couldn't you be optimizing?
couldn't she be optimizing?
couldn't we be optimizing?
couldn't you be optimizing?
couldn't they be optimizing? 	couldn't I have optimized?
couldn't you have optimized?
couldn't she have optimized?
couldn't we have optimized?
couldn't you have optimized?
couldn't they have optimized? 	couldn't I have been optimizing?
couldn't you have been optimizing?
couldn't she have been optimizing?
couldn't we have been optimizing?
couldn't you have been optimizing?
couldn't they have been optimizing?