could frogmarch
Verbo regular: frogmarch - frogmarched- frogmarched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could frogmarch
you could frogmarch
she could frogmarch
we could frogmarch
you could frogmarch
they could frogmarch 	I could be frogmarching
you could be frogmarching
she could be frogmarching
we could be frogmarching
you could be frogmarching
they could be frogmarching	I could have frogmarched
you could have frogmarched
she could have frogmarched
we could have frogmarched
you could have frogmarched
they could have frogmarched	I could have been frogmarching
you could have been frogmarching
she could have been frogmarching
we could have been frogmarching
you could have been frogmarching
they could have been frogmarching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not frogmarch
you could not frogmarch
she could not frogmarch
we could not frogmarch
you could not frogmarch
they could not frogmarch 	I could not be frogmarching
you could not be frogmarching
she could not be frogmarching
we could not be frogmarching
you could not be frogmarching
they could not be frogmarching	I could not have frogmarched
you could not have frogmarched
she could not have frogmarched
we could not have frogmarched
you could not have frogmarched
they could not have frogmarched	I could not have been frogmarching
you could not have been frogmarching
she could not have been frogmarching
we could not have been frogmarching
you could not have been frogmarching
they could not have been frogmarching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I frogmarch?
could you frogmarch?
could she frogmarch?
could we frogmarch?
could you frogmarch?
could they frogmarch? 	could I be frogmarching?
could you be frogmarching?
could she be frogmarching?
could we be frogmarching?
could you be frogmarching?
could they be frogmarching? 	could I have frogmarched?
could you have frogmarched?
could she have frogmarched?
could we have frogmarched?
could you have frogmarched?
could they have frogmarched? 	could I have been frogmarching?
could you have been frogmarching?
could she have been frogmarching?
could we have been frogmarching?
could you have been frogmarching?
could they have been frogmarching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not frogmarch?
could you not frogmarch?
could she not frogmarch?
could we not frogmarch?
could you not frogmarch?
could they not frogmarch? 	could I not be frogmarching?
could you not be frogmarching?
could she not be frogmarching?
could we not be frogmarching?
could you not be frogmarching?
could they not be frogmarching? 	could I not have frogmarched?
could you not have frogmarched?
could she not have frogmarched?
could we not have frogmarched?
could you not have frogmarched?
could they not have frogmarched? 	could I not have been frogmarching?
could you not have been frogmarching?
could she not have been frogmarching?
could we not have been frogmarching?
could you not have been frogmarching?
could they not have been frogmarching?