could truckle
Regular verb: truckle - truckled- truckled

Affirmation 	
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I could truckle
you could truckle
he could truckle
we could truckle
you could truckle
they could truckle 	I could be truckling
you could be truckling
he could be truckling
we could be truckling
you could be truckling
they could be truckling	I could have truckled
you could have truckled
he could have truckled
we could have truckled
you could have truckled
they could have truckled	I could have been truckling
you could have been truckling
he could have been truckling
we could have been truckling
you could have been truckling
they could have been truckling	

Negation 	
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I couldn't truckle
you couldn't truckle
he couldn't truckle
we couldn't truckle
you couldn't truckle
they couldn't truckle 	I couldn't be truckling
you couldn't be truckling
he couldn't be truckling
we couldn't be truckling
you couldn't be truckling
they couldn't be truckling	I couldn't have truckled
you couldn't have truckled
he couldn't have truckled
we couldn't have truckled
you couldn't have truckled
they couldn't have truckled	I couldn't have been truckling
you couldn't have been truckling
he couldn't have been truckling
we couldn't have been truckling
you couldn't have been truckling
they couldn't have been truckling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I truckle?
could you truckle?
could he truckle?
could we truckle?
could you truckle?
could they truckle? 	could I be truckling?
could you be truckling?
could he be truckling?
could we be truckling?
could you be truckling?
could they be truckling? 	could I have truckled?
could you have truckled?
could he have truckled?
could we have truckled?
could you have truckled?
could they have truckled? 	could I have been truckling?
could you have been truckling?
could he have been truckling?
could we have been truckling?
could you have been truckling?
could they have been truckling? 	

Interro-negative form 	
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couldn't I truckle?
couldn't you truckle?
couldn't he truckle?
couldn't we truckle?
couldn't you truckle?
couldn't they truckle? 	couldn't I be truckling?
couldn't you be truckling?
couldn't he be truckling?
couldn't we be truckling?
couldn't you be truckling?
couldn't they be truckling? 	couldn't I have truckled?
couldn't you have truckled?
couldn't he have truckled?
couldn't we have truckled?
couldn't you have truckled?
couldn't they have truckled? 	couldn't I have been truckling?
couldn't you have been truckling?
couldn't he have been truckling?
couldn't we have been truckling?
couldn't you have been truckling?
couldn't they have been truckling?