can muck
Regular verb: muck - mucked- mucked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can muck
you can muck
she can muck
we can muck
you can muck
they can muck 	I can be mucking
you can be mucking
she can be mucking
we can be mucking
you can be mucking
they can be mucking	I can have mucked
you can have mucked
she can have mucked
we can have mucked
you can have mucked
they can have mucked	I can have been mucking
you can have been mucking
she can have been mucking
we can have been mucking
you can have been mucking
they can have been mucking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't muck
you can't muck
she can't muck
we can't muck
you can't muck
they can't muck 	I can't be mucking
you can't be mucking
she can't be mucking
we can't be mucking
you can't be mucking
they can't be mucking	I can't have mucked
you can't have mucked
she can't have mucked
we can't have mucked
you can't have mucked
they can't have mucked	I can't have been mucking
you can't have been mucking
she can't have been mucking
we can't have been mucking
you can't have been mucking
they can't have been mucking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I muck?
can you muck?
can she muck?
can we muck?
can you muck?
can they muck? 	can I be mucking?
can you be mucking?
can she be mucking?
can we be mucking?
can you be mucking?
can they be mucking? 	can I have mucked?
can you have mucked?
can she have mucked?
can we have mucked?
can you have mucked?
can they have mucked? 	can I have been mucking?
can you have been mucking?
can she have been mucking?
can we have been mucking?
can you have been mucking?
can they have been mucking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I muck?
can't you muck?
can't she muck?
can't we muck?
can't you muck?
can't they muck? 	can't I be mucking?
can't you be mucking?
can't she be mucking?
can't we be mucking?
can't you be mucking?
can't they be mucking? 	can't I have mucked?
can't you have mucked?
can't she have mucked?
can't we have mucked?
can't you have mucked?
can't they have mucked? 	can't I have been mucking?
can't you have been mucking?
can't she have been mucking?
can't we have been mucking?
can't you have been mucking?
can't they have been mucking?