could preprogram
Verbo regular: preprogram - preprogramed- preprogramed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could preprogram
you could preprogram
she could preprogram
we could preprogram
you could preprogram
they could preprogram 	I could be preprograming
you could be preprograming
she could be preprograming
we could be preprograming
you could be preprograming
they could be preprograming	I could have preprogramed
you could have preprogramed
she could have preprogramed
we could have preprogramed
you could have preprogramed
they could have preprogramed	I could have been preprograming
you could have been preprograming
she could have been preprograming
we could have been preprograming
you could have been preprograming
they could have been preprograming	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't preprogram
you couldn't preprogram
she couldn't preprogram
we couldn't preprogram
you couldn't preprogram
they couldn't preprogram 	I couldn't be preprograming
you couldn't be preprograming
she couldn't be preprograming
we couldn't be preprograming
you couldn't be preprograming
they couldn't be preprograming	I couldn't have preprogramed
you couldn't have preprogramed
she couldn't have preprogramed
we couldn't have preprogramed
you couldn't have preprogramed
they couldn't have preprogramed	I couldn't have been preprograming
you couldn't have been preprograming
she couldn't have been preprograming
we couldn't have been preprograming
you couldn't have been preprograming
they couldn't have been preprograming	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I preprogram?
could you preprogram?
could she preprogram?
could we preprogram?
could you preprogram?
could they preprogram? 	could I be preprograming?
could you be preprograming?
could she be preprograming?
could we be preprograming?
could you be preprograming?
could they be preprograming? 	could I have preprogramed?
could you have preprogramed?
could she have preprogramed?
could we have preprogramed?
could you have preprogramed?
could they have preprogramed? 	could I have been preprograming?
could you have been preprograming?
could she have been preprograming?
could we have been preprograming?
could you have been preprograming?
could they have been preprograming? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I preprogram?
couldn't you preprogram?
couldn't she preprogram?
couldn't we preprogram?
couldn't you preprogram?
couldn't they preprogram? 	couldn't I be preprograming?
couldn't you be preprograming?
couldn't she be preprograming?
couldn't we be preprograming?
couldn't you be preprograming?
couldn't they be preprograming? 	couldn't I have preprogramed?
couldn't you have preprogramed?
couldn't she have preprogramed?
couldn't we have preprogramed?
couldn't you have preprogramed?
couldn't they have preprogramed? 	couldn't I have been preprograming?
couldn't you have been preprograming?
couldn't she have been preprograming?
couldn't we have been preprograming?
couldn't you have been preprograming?
couldn't they have been preprograming?