could muck
Verbo regular: muck - mucked- mucked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could muck
you could muck
she could muck
we could muck
you could muck
they could muck 	I could be mucking
you could be mucking
she could be mucking
we could be mucking
you could be mucking
they could be mucking	I could have mucked
you could have mucked
she could have mucked
we could have mucked
you could have mucked
they could have mucked	I could have been mucking
you could have been mucking
she could have been mucking
we could have been mucking
you could have been mucking
they could have been mucking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not muck
you could not muck
she could not muck
we could not muck
you could not muck
they could not muck 	I could not be mucking
you could not be mucking
she could not be mucking
we could not be mucking
you could not be mucking
they could not be mucking	I could not have mucked
you could not have mucked
she could not have mucked
we could not have mucked
you could not have mucked
they could not have mucked	I could not have been mucking
you could not have been mucking
she could not have been mucking
we could not have been mucking
you could not have been mucking
they could not have been mucking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I muck?
could you muck?
could she muck?
could we muck?
could you muck?
could they muck? 	could I be mucking?
could you be mucking?
could she be mucking?
could we be mucking?
could you be mucking?
could they be mucking? 	could I have mucked?
could you have mucked?
could she have mucked?
could we have mucked?
could you have mucked?
could they have mucked? 	could I have been mucking?
could you have been mucking?
could she have been mucking?
could we have been mucking?
could you have been mucking?
could they have been mucking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not muck?
could you not muck?
could she not muck?
could we not muck?
could you not muck?
could they not muck? 	could I not be mucking?
could you not be mucking?
could she not be mucking?
could we not be mucking?
could you not be mucking?
could they not be mucking? 	could I not have mucked?
could you not have mucked?
could she not have mucked?
could we not have mucked?
could you not have mucked?
could they not have mucked? 	could I not have been mucking?
could you not have been mucking?
could she not have been mucking?
could we not have been mucking?
could you not have been mucking?
could they not have been mucking?