could bushwack
Regular verb: bushwack - bushwacked- bushwacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bushwack
you could bushwack
she could bushwack
we could bushwack
you could bushwack
they could bushwack 	I could be bushwacking
you could be bushwacking
she could be bushwacking
we could be bushwacking
you could be bushwacking
they could be bushwacking	I could have bushwacked
you could have bushwacked
she could have bushwacked
we could have bushwacked
you could have bushwacked
they could have bushwacked	I could have been bushwacking
you could have been bushwacking
she could have been bushwacking
we could have been bushwacking
you could have been bushwacking
they could have been bushwacking	

Negation 	
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I could not bushwack
you could not bushwack
she could not bushwack
we could not bushwack
you could not bushwack
they could not bushwack 	I could not be bushwacking
you could not be bushwacking
she could not be bushwacking
we could not be bushwacking
you could not be bushwacking
they could not be bushwacking	I could not have bushwacked
you could not have bushwacked
she could not have bushwacked
we could not have bushwacked
you could not have bushwacked
they could not have bushwacked	I could not have been bushwacking
you could not have been bushwacking
she could not have been bushwacking
we could not have been bushwacking
you could not have been bushwacking
they could not have been bushwacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bushwack?
could you bushwack?
could she bushwack?
could we bushwack?
could you bushwack?
could they bushwack? 	could I be bushwacking?
could you be bushwacking?
could she be bushwacking?
could we be bushwacking?
could you be bushwacking?
could they be bushwacking? 	could I have bushwacked?
could you have bushwacked?
could she have bushwacked?
could we have bushwacked?
could you have bushwacked?
could they have bushwacked? 	could I have been bushwacking?
could you have been bushwacking?
could she have been bushwacking?
could we have been bushwacking?
could you have been bushwacking?
could they have been bushwacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not bushwack?
could you not bushwack?
could she not bushwack?
could we not bushwack?
could you not bushwack?
could they not bushwack? 	could I not be bushwacking?
could you not be bushwacking?
could she not be bushwacking?
could we not be bushwacking?
could you not be bushwacking?
could they not be bushwacking? 	could I not have bushwacked?
could you not have bushwacked?
could she not have bushwacked?
could we not have bushwacked?
could you not have bushwacked?
could they not have bushwacked? 	could I not have been bushwacking?
could you not have been bushwacking?
could she not have been bushwacking?
could we not have been bushwacking?
could you not have been bushwacking?
could they not have been bushwacking?