could muddy
Regular verb: muddy - muddied- muddied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could muddy
you could muddy
she could muddy
we could muddy
you could muddy
they could muddy 	I could be muddying
you could be muddying
she could be muddying
we could be muddying
you could be muddying
they could be muddying	I could have muddied
you could have muddied
she could have muddied
we could have muddied
you could have muddied
they could have muddied	I could have been muddying
you could have been muddying
she could have been muddying
we could have been muddying
you could have been muddying
they could have been muddying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't muddy
you couldn't muddy
she couldn't muddy
we couldn't muddy
you couldn't muddy
they couldn't muddy 	I couldn't be muddying
you couldn't be muddying
she couldn't be muddying
we couldn't be muddying
you couldn't be muddying
they couldn't be muddying	I couldn't have muddied
you couldn't have muddied
she couldn't have muddied
we couldn't have muddied
you couldn't have muddied
they couldn't have muddied	I couldn't have been muddying
you couldn't have been muddying
she couldn't have been muddying
we couldn't have been muddying
you couldn't have been muddying
they couldn't have been muddying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I muddy?
could you muddy?
could she muddy?
could we muddy?
could you muddy?
could they muddy? 	could I be muddying?
could you be muddying?
could she be muddying?
could we be muddying?
could you be muddying?
could they be muddying? 	could I have muddied?
could you have muddied?
could she have muddied?
could we have muddied?
could you have muddied?
could they have muddied? 	could I have been muddying?
could you have been muddying?
could she have been muddying?
could we have been muddying?
could you have been muddying?
could they have been muddying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I muddy?
couldn't you muddy?
couldn't she muddy?
couldn't we muddy?
couldn't you muddy?
couldn't they muddy? 	couldn't I be muddying?
couldn't you be muddying?
couldn't she be muddying?
couldn't we be muddying?
couldn't you be muddying?
couldn't they be muddying? 	couldn't I have muddied?
couldn't you have muddied?
couldn't she have muddied?
couldn't we have muddied?
couldn't you have muddied?
couldn't they have muddied? 	couldn't I have been muddying?
couldn't you have been muddying?
couldn't she have been muddying?
couldn't we have been muddying?
couldn't you have been muddying?
couldn't they have been muddying?