could harrow
Regular verb: harrow - harrowed- harrowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could harrow
you could harrow
she could harrow
we could harrow
you could harrow
they could harrow 	I could be harrowing
you could be harrowing
she could be harrowing
we could be harrowing
you could be harrowing
they could be harrowing	I could have harrowed
you could have harrowed
she could have harrowed
we could have harrowed
you could have harrowed
they could have harrowed	I could have been harrowing
you could have been harrowing
she could have been harrowing
we could have been harrowing
you could have been harrowing
they could have been harrowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't harrow
you couldn't harrow
she couldn't harrow
we couldn't harrow
you couldn't harrow
they couldn't harrow 	I couldn't be harrowing
you couldn't be harrowing
she couldn't be harrowing
we couldn't be harrowing
you couldn't be harrowing
they couldn't be harrowing	I couldn't have harrowed
you couldn't have harrowed
she couldn't have harrowed
we couldn't have harrowed
you couldn't have harrowed
they couldn't have harrowed	I couldn't have been harrowing
you couldn't have been harrowing
she couldn't have been harrowing
we couldn't have been harrowing
you couldn't have been harrowing
they couldn't have been harrowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I harrow?
could you harrow?
could she harrow?
could we harrow?
could you harrow?
could they harrow? 	could I be harrowing?
could you be harrowing?
could she be harrowing?
could we be harrowing?
could you be harrowing?
could they be harrowing? 	could I have harrowed?
could you have harrowed?
could she have harrowed?
could we have harrowed?
could you have harrowed?
could they have harrowed? 	could I have been harrowing?
could you have been harrowing?
could she have been harrowing?
could we have been harrowing?
could you have been harrowing?
could they have been harrowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I harrow?
couldn't you harrow?
couldn't she harrow?
couldn't we harrow?
couldn't you harrow?
couldn't they harrow? 	couldn't I be harrowing?
couldn't you be harrowing?
couldn't she be harrowing?
couldn't we be harrowing?
couldn't you be harrowing?
couldn't they be harrowing? 	couldn't I have harrowed?
couldn't you have harrowed?
couldn't she have harrowed?
couldn't we have harrowed?
couldn't you have harrowed?
couldn't they have harrowed? 	couldn't I have been harrowing?
couldn't you have been harrowing?
couldn't she have been harrowing?
couldn't we have been harrowing?
couldn't you have been harrowing?
couldn't they have been harrowing?