could submit
Verbo regular: submit - submitted- submitted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could submit
you could submit
she could submit
we could submit
you could submit
they could submit 	I could be submitting
you could be submitting
she could be submitting
we could be submitting
you could be submitting
they could be submitting	I could have submitted
you could have submitted
she could have submitted
we could have submitted
you could have submitted
they could have submitted	I could have been submitting
you could have been submitting
she could have been submitting
we could have been submitting
you could have been submitting
they could have been submitting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't submit
you couldn't submit
she couldn't submit
we couldn't submit
you couldn't submit
they couldn't submit 	I couldn't be submitting
you couldn't be submitting
she couldn't be submitting
we couldn't be submitting
you couldn't be submitting
they couldn't be submitting	I couldn't have submitted
you couldn't have submitted
she couldn't have submitted
we couldn't have submitted
you couldn't have submitted
they couldn't have submitted	I couldn't have been submitting
you couldn't have been submitting
she couldn't have been submitting
we couldn't have been submitting
you couldn't have been submitting
they couldn't have been submitting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I submit?
could you submit?
could she submit?
could we submit?
could you submit?
could they submit? 	could I be submitting?
could you be submitting?
could she be submitting?
could we be submitting?
could you be submitting?
could they be submitting? 	could I have submitted?
could you have submitted?
could she have submitted?
could we have submitted?
could you have submitted?
could they have submitted? 	could I have been submitting?
could you have been submitting?
could she have been submitting?
could we have been submitting?
could you have been submitting?
could they have been submitting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I submit?
couldn't you submit?
couldn't she submit?
couldn't we submit?
couldn't you submit?
couldn't they submit? 	couldn't I be submitting?
couldn't you be submitting?
couldn't she be submitting?
couldn't we be submitting?
couldn't you be submitting?
couldn't they be submitting? 	couldn't I have submitted?
couldn't you have submitted?
couldn't she have submitted?
couldn't we have submitted?
couldn't you have submitted?
couldn't they have submitted? 	couldn't I have been submitting?
couldn't you have been submitting?
couldn't she have been submitting?
couldn't we have been submitting?
couldn't you have been submitting?
couldn't they have been submitting?