could muddle
Verbo regular: muddle - muddled- muddled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could muddle
you could muddle
he could muddle
we could muddle
you could muddle
they could muddle 	I could be muddling
you could be muddling
he could be muddling
we could be muddling
you could be muddling
they could be muddling	I could have muddled
you could have muddled
he could have muddled
we could have muddled
you could have muddled
they could have muddled	I could have been muddling
you could have been muddling
he could have been muddling
we could have been muddling
you could have been muddling
they could have been muddling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't muddle
you couldn't muddle
he couldn't muddle
we couldn't muddle
you couldn't muddle
they couldn't muddle 	I couldn't be muddling
you couldn't be muddling
he couldn't be muddling
we couldn't be muddling
you couldn't be muddling
they couldn't be muddling	I couldn't have muddled
you couldn't have muddled
he couldn't have muddled
we couldn't have muddled
you couldn't have muddled
they couldn't have muddled	I couldn't have been muddling
you couldn't have been muddling
he couldn't have been muddling
we couldn't have been muddling
you couldn't have been muddling
they couldn't have been muddling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I muddle?
could you muddle?
could he muddle?
could we muddle?
could you muddle?
could they muddle? 	could I be muddling?
could you be muddling?
could he be muddling?
could we be muddling?
could you be muddling?
could they be muddling? 	could I have muddled?
could you have muddled?
could he have muddled?
could we have muddled?
could you have muddled?
could they have muddled? 	could I have been muddling?
could you have been muddling?
could he have been muddling?
could we have been muddling?
could you have been muddling?
could they have been muddling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I muddle?
couldn't you muddle?
couldn't he muddle?
couldn't we muddle?
couldn't you muddle?
couldn't they muddle? 	couldn't I be muddling?
couldn't you be muddling?
couldn't he be muddling?
couldn't we be muddling?
couldn't you be muddling?
couldn't they be muddling? 	couldn't I have muddled?
couldn't you have muddled?
couldn't he have muddled?
couldn't we have muddled?
couldn't you have muddled?
couldn't they have muddled? 	couldn't I have been muddling?
couldn't you have been muddling?
couldn't he have been muddling?
couldn't we have been muddling?
couldn't you have been muddling?
couldn't they have been muddling?