could ruck
Regular verb: ruck - rucked- rucked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ruck
you could ruck
he could ruck
we could ruck
you could ruck
they could ruck 	I could be rucking
you could be rucking
he could be rucking
we could be rucking
you could be rucking
they could be rucking	I could have rucked
you could have rucked
he could have rucked
we could have rucked
you could have rucked
they could have rucked	I could have been rucking
you could have been rucking
he could have been rucking
we could have been rucking
you could have been rucking
they could have been rucking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ruck
you could not ruck
he could not ruck
we could not ruck
you could not ruck
they could not ruck 	I could not be rucking
you could not be rucking
he could not be rucking
we could not be rucking
you could not be rucking
they could not be rucking	I could not have rucked
you could not have rucked
he could not have rucked
we could not have rucked
you could not have rucked
they could not have rucked	I could not have been rucking
you could not have been rucking
he could not have been rucking
we could not have been rucking
you could not have been rucking
they could not have been rucking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ruck?
could you ruck?
could he ruck?
could we ruck?
could you ruck?
could they ruck? 	could I be rucking?
could you be rucking?
could he be rucking?
could we be rucking?
could you be rucking?
could they be rucking? 	could I have rucked?
could you have rucked?
could he have rucked?
could we have rucked?
could you have rucked?
could they have rucked? 	could I have been rucking?
could you have been rucking?
could he have been rucking?
could we have been rucking?
could you have been rucking?
could they have been rucking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ruck?
could you not ruck?
could he not ruck?
could we not ruck?
could you not ruck?
could they not ruck? 	could I not be rucking?
could you not be rucking?
could he not be rucking?
could we not be rucking?
could you not be rucking?
could they not be rucking? 	could I not have rucked?
could you not have rucked?
could he not have rucked?
could we not have rucked?
could you not have rucked?
could they not have rucked? 	could I not have been rucking?
could you not have been rucking?
could he not have been rucking?
could we not have been rucking?
could you not have been rucking?
could they not have been rucking?