could truss
Regular verb: truss - trussed- trussed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could truss
you could truss
he could truss
we could truss
you could truss
they could truss 	I could be trussing
you could be trussing
he could be trussing
we could be trussing
you could be trussing
they could be trussing	I could have trussed
you could have trussed
he could have trussed
we could have trussed
you could have trussed
they could have trussed	I could have been trussing
you could have been trussing
he could have been trussing
we could have been trussing
you could have been trussing
they could have been trussing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't truss
you couldn't truss
he couldn't truss
we couldn't truss
you couldn't truss
they couldn't truss 	I couldn't be trussing
you couldn't be trussing
he couldn't be trussing
we couldn't be trussing
you couldn't be trussing
they couldn't be trussing	I couldn't have trussed
you couldn't have trussed
he couldn't have trussed
we couldn't have trussed
you couldn't have trussed
they couldn't have trussed	I couldn't have been trussing
you couldn't have been trussing
he couldn't have been trussing
we couldn't have been trussing
you couldn't have been trussing
they couldn't have been trussing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I truss?
could you truss?
could he truss?
could we truss?
could you truss?
could they truss? 	could I be trussing?
could you be trussing?
could he be trussing?
could we be trussing?
could you be trussing?
could they be trussing? 	could I have trussed?
could you have trussed?
could he have trussed?
could we have trussed?
could you have trussed?
could they have trussed? 	could I have been trussing?
could you have been trussing?
could he have been trussing?
could we have been trussing?
could you have been trussing?
could they have been trussing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I truss?
couldn't you truss?
couldn't he truss?
couldn't we truss?
couldn't you truss?
couldn't they truss? 	couldn't I be trussing?
couldn't you be trussing?
couldn't he be trussing?
couldn't we be trussing?
couldn't you be trussing?
couldn't they be trussing? 	couldn't I have trussed?
couldn't you have trussed?
couldn't he have trussed?
couldn't we have trussed?
couldn't you have trussed?
couldn't they have trussed? 	couldn't I have been trussing?
couldn't you have been trussing?
couldn't he have been trussing?
couldn't we have been trussing?
couldn't you have been trussing?
couldn't they have been trussing?