could mud
Regular verb: mud - mudded- mudded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mud
you could mud
she could mud
we could mud
you could mud
they could mud 	I could be mudding
you could be mudding
she could be mudding
we could be mudding
you could be mudding
they could be mudding	I could have mudded
you could have mudded
she could have mudded
we could have mudded
you could have mudded
they could have mudded	I could have been mudding
you could have been mudding
she could have been mudding
we could have been mudding
you could have been mudding
they could have been mudding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't mud
you couldn't mud
she couldn't mud
we couldn't mud
you couldn't mud
they couldn't mud 	I couldn't be mudding
you couldn't be mudding
she couldn't be mudding
we couldn't be mudding
you couldn't be mudding
they couldn't be mudding	I couldn't have mudded
you couldn't have mudded
she couldn't have mudded
we couldn't have mudded
you couldn't have mudded
they couldn't have mudded	I couldn't have been mudding
you couldn't have been mudding
she couldn't have been mudding
we couldn't have been mudding
you couldn't have been mudding
they couldn't have been mudding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mud?
could you mud?
could she mud?
could we mud?
could you mud?
could they mud? 	could I be mudding?
could you be mudding?
could she be mudding?
could we be mudding?
could you be mudding?
could they be mudding? 	could I have mudded?
could you have mudded?
could she have mudded?
could we have mudded?
could you have mudded?
could they have mudded? 	could I have been mudding?
could you have been mudding?
could she have been mudding?
could we have been mudding?
could you have been mudding?
could they have been mudding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I mud?
couldn't you mud?
couldn't she mud?
couldn't we mud?
couldn't you mud?
couldn't they mud? 	couldn't I be mudding?
couldn't you be mudding?
couldn't she be mudding?
couldn't we be mudding?
couldn't you be mudding?
couldn't they be mudding? 	couldn't I have mudded?
couldn't you have mudded?
couldn't she have mudded?
couldn't we have mudded?
couldn't you have mudded?
couldn't they have mudded? 	couldn't I have been mudding?
couldn't you have been mudding?
couldn't she have been mudding?
couldn't we have been mudding?
couldn't you have been mudding?
couldn't they have been mudding?