could apologize
Verbo regular: apologize - apologized- apologized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could apologize
you could apologize
she could apologize
we could apologize
you could apologize
they could apologize 	I could be apologizing
you could be apologizing
she could be apologizing
we could be apologizing
you could be apologizing
they could be apologizing	I could have apologized
you could have apologized
she could have apologized
we could have apologized
you could have apologized
they could have apologized	I could have been apologizing
you could have been apologizing
she could have been apologizing
we could have been apologizing
you could have been apologizing
they could have been apologizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't apologize
you couldn't apologize
she couldn't apologize
we couldn't apologize
you couldn't apologize
they couldn't apologize 	I couldn't be apologizing
you couldn't be apologizing
she couldn't be apologizing
we couldn't be apologizing
you couldn't be apologizing
they couldn't be apologizing	I couldn't have apologized
you couldn't have apologized
she couldn't have apologized
we couldn't have apologized
you couldn't have apologized
they couldn't have apologized	I couldn't have been apologizing
you couldn't have been apologizing
she couldn't have been apologizing
we couldn't have been apologizing
you couldn't have been apologizing
they couldn't have been apologizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I apologize?
could you apologize?
could she apologize?
could we apologize?
could you apologize?
could they apologize? 	could I be apologizing?
could you be apologizing?
could she be apologizing?
could we be apologizing?
could you be apologizing?
could they be apologizing? 	could I have apologized?
could you have apologized?
could she have apologized?
could we have apologized?
could you have apologized?
could they have apologized? 	could I have been apologizing?
could you have been apologizing?
could she have been apologizing?
could we have been apologizing?
could you have been apologizing?
could they have been apologizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I apologize?
couldn't you apologize?
couldn't she apologize?
couldn't we apologize?
couldn't you apologize?
couldn't they apologize? 	couldn't I be apologizing?
couldn't you be apologizing?
couldn't she be apologizing?
couldn't we be apologizing?
couldn't you be apologizing?
couldn't they be apologizing? 	couldn't I have apologized?
couldn't you have apologized?
couldn't she have apologized?
couldn't we have apologized?
couldn't you have apologized?
couldn't they have apologized? 	couldn't I have been apologizing?
couldn't you have been apologizing?
couldn't she have been apologizing?
couldn't we have been apologizing?
couldn't you have been apologizing?
couldn't they have been apologizing?