could rough-dry
Regular verb: rough-dry - rough-dried- rough-dried

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rough-dry
you could rough-dry
she could rough-dry
we could rough-dry
you could rough-dry
they could rough-dry 	I could be rough-drying
you could be rough-drying
she could be rough-drying
we could be rough-drying
you could be rough-drying
they could be rough-drying	I could have rough-dried
you could have rough-dried
she could have rough-dried
we could have rough-dried
you could have rough-dried
they could have rough-dried	I could have been rough-drying
you could have been rough-drying
she could have been rough-drying
we could have been rough-drying
you could have been rough-drying
they could have been rough-drying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rough-dry
you couldn't rough-dry
she couldn't rough-dry
we couldn't rough-dry
you couldn't rough-dry
they couldn't rough-dry 	I couldn't be rough-drying
you couldn't be rough-drying
she couldn't be rough-drying
we couldn't be rough-drying
you couldn't be rough-drying
they couldn't be rough-drying	I couldn't have rough-dried
you couldn't have rough-dried
she couldn't have rough-dried
we couldn't have rough-dried
you couldn't have rough-dried
they couldn't have rough-dried	I couldn't have been rough-drying
you couldn't have been rough-drying
she couldn't have been rough-drying
we couldn't have been rough-drying
you couldn't have been rough-drying
they couldn't have been rough-drying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rough-dry?
could you rough-dry?
could she rough-dry?
could we rough-dry?
could you rough-dry?
could they rough-dry? 	could I be rough-drying?
could you be rough-drying?
could she be rough-drying?
could we be rough-drying?
could you be rough-drying?
could they be rough-drying? 	could I have rough-dried?
could you have rough-dried?
could she have rough-dried?
could we have rough-dried?
could you have rough-dried?
could they have rough-dried? 	could I have been rough-drying?
could you have been rough-drying?
could she have been rough-drying?
could we have been rough-drying?
could you have been rough-drying?
could they have been rough-drying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rough-dry?
couldn't you rough-dry?
couldn't she rough-dry?
couldn't we rough-dry?
couldn't you rough-dry?
couldn't they rough-dry? 	couldn't I be rough-drying?
couldn't you be rough-drying?
couldn't she be rough-drying?
couldn't we be rough-drying?
couldn't you be rough-drying?
couldn't they be rough-drying? 	couldn't I have rough-dried?
couldn't you have rough-dried?
couldn't she have rough-dried?
couldn't we have rough-dried?
couldn't you have rough-dried?
couldn't they have rough-dried? 	couldn't I have been rough-drying?
couldn't you have been rough-drying?
couldn't she have been rough-drying?
couldn't we have been rough-drying?
couldn't you have been rough-drying?
couldn't they have been rough-drying?