could trot
Regular verb: trot - trotted- trotted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could trot
you could trot
she could trot
we could trot
you could trot
they could trot 	I could be trotting
you could be trotting
she could be trotting
we could be trotting
you could be trotting
they could be trotting	I could have trotted
you could have trotted
she could have trotted
we could have trotted
you could have trotted
they could have trotted	I could have been trotting
you could have been trotting
she could have been trotting
we could have been trotting
you could have been trotting
they could have been trotting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't trot
you couldn't trot
she couldn't trot
we couldn't trot
you couldn't trot
they couldn't trot 	I couldn't be trotting
you couldn't be trotting
she couldn't be trotting
we couldn't be trotting
you couldn't be trotting
they couldn't be trotting	I couldn't have trotted
you couldn't have trotted
she couldn't have trotted
we couldn't have trotted
you couldn't have trotted
they couldn't have trotted	I couldn't have been trotting
you couldn't have been trotting
she couldn't have been trotting
we couldn't have been trotting
you couldn't have been trotting
they couldn't have been trotting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I trot?
could you trot?
could she trot?
could we trot?
could you trot?
could they trot? 	could I be trotting?
could you be trotting?
could she be trotting?
could we be trotting?
could you be trotting?
could they be trotting? 	could I have trotted?
could you have trotted?
could she have trotted?
could we have trotted?
could you have trotted?
could they have trotted? 	could I have been trotting?
could you have been trotting?
could she have been trotting?
could we have been trotting?
could you have been trotting?
could they have been trotting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I trot?
couldn't you trot?
couldn't she trot?
couldn't we trot?
couldn't you trot?
couldn't they trot? 	couldn't I be trotting?
couldn't you be trotting?
couldn't she be trotting?
couldn't we be trotting?
couldn't you be trotting?
couldn't they be trotting? 	couldn't I have trotted?
couldn't you have trotted?
couldn't she have trotted?
couldn't we have trotted?
couldn't you have trotted?
couldn't they have trotted? 	couldn't I have been trotting?
couldn't you have been trotting?
couldn't she have been trotting?
couldn't we have been trotting?
couldn't you have been trotting?
couldn't they have been trotting?