could clot
Regular verb: clot - clotted- clotted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could clot
you could clot
she could clot
we could clot
you could clot
they could clot 	I could be clotting
you could be clotting
she could be clotting
we could be clotting
you could be clotting
they could be clotting	I could have clotted
you could have clotted
she could have clotted
we could have clotted
you could have clotted
they could have clotted	I could have been clotting
you could have been clotting
she could have been clotting
we could have been clotting
you could have been clotting
they could have been clotting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't clot
you couldn't clot
she couldn't clot
we couldn't clot
you couldn't clot
they couldn't clot 	I couldn't be clotting
you couldn't be clotting
she couldn't be clotting
we couldn't be clotting
you couldn't be clotting
they couldn't be clotting	I couldn't have clotted
you couldn't have clotted
she couldn't have clotted
we couldn't have clotted
you couldn't have clotted
they couldn't have clotted	I couldn't have been clotting
you couldn't have been clotting
she couldn't have been clotting
we couldn't have been clotting
you couldn't have been clotting
they couldn't have been clotting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I clot?
could you clot?
could she clot?
could we clot?
could you clot?
could they clot? 	could I be clotting?
could you be clotting?
could she be clotting?
could we be clotting?
could you be clotting?
could they be clotting? 	could I have clotted?
could you have clotted?
could she have clotted?
could we have clotted?
could you have clotted?
could they have clotted? 	could I have been clotting?
could you have been clotting?
could she have been clotting?
could we have been clotting?
could you have been clotting?
could they have been clotting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I clot?
couldn't you clot?
couldn't she clot?
couldn't we clot?
couldn't you clot?
couldn't they clot? 	couldn't I be clotting?
couldn't you be clotting?
couldn't she be clotting?
couldn't we be clotting?
couldn't you be clotting?
couldn't they be clotting? 	couldn't I have clotted?
couldn't you have clotted?
couldn't she have clotted?
couldn't we have clotted?
couldn't you have clotted?
couldn't they have clotted? 	couldn't I have been clotting?
couldn't you have been clotting?
couldn't she have been clotting?
couldn't we have been clotting?
couldn't you have been clotting?
couldn't they have been clotting?