could truck
Regular verb: truck - trucked- trucked

Affirmation 	
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I could truck
you could truck
he could truck
we could truck
you could truck
they could truck 	I could be trucking
you could be trucking
he could be trucking
we could be trucking
you could be trucking
they could be trucking	I could have trucked
you could have trucked
he could have trucked
we could have trucked
you could have trucked
they could have trucked	I could have been trucking
you could have been trucking
he could have been trucking
we could have been trucking
you could have been trucking
they could have been trucking	

Negation 	
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I couldn't truck
you couldn't truck
he couldn't truck
we couldn't truck
you couldn't truck
they couldn't truck 	I couldn't be trucking
you couldn't be trucking
he couldn't be trucking
we couldn't be trucking
you couldn't be trucking
they couldn't be trucking	I couldn't have trucked
you couldn't have trucked
he couldn't have trucked
we couldn't have trucked
you couldn't have trucked
they couldn't have trucked	I couldn't have been trucking
you couldn't have been trucking
he couldn't have been trucking
we couldn't have been trucking
you couldn't have been trucking
they couldn't have been trucking	

Interrogative form 	
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could I truck?
could you truck?
could he truck?
could we truck?
could you truck?
could they truck? 	could I be trucking?
could you be trucking?
could he be trucking?
could we be trucking?
could you be trucking?
could they be trucking? 	could I have trucked?
could you have trucked?
could he have trucked?
could we have trucked?
could you have trucked?
could they have trucked? 	could I have been trucking?
could you have been trucking?
could he have been trucking?
could we have been trucking?
could you have been trucking?
could they have been trucking? 	

Interro-negative form 	
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couldn't I truck?
couldn't you truck?
couldn't he truck?
couldn't we truck?
couldn't you truck?
couldn't they truck? 	couldn't I be trucking?
couldn't you be trucking?
couldn't he be trucking?
couldn't we be trucking?
couldn't you be trucking?
couldn't they be trucking? 	couldn't I have trucked?
couldn't you have trucked?
couldn't he have trucked?
couldn't we have trucked?
couldn't you have trucked?
couldn't they have trucked? 	couldn't I have been trucking?
couldn't you have been trucking?
couldn't he have been trucking?
couldn't we have been trucking?
couldn't you have been trucking?
couldn't they have been trucking?