could luck
Regular verb: luck - lucked- lucked

Affirmation 	
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I could luck
you could luck
she could luck
we could luck
you could luck
they could luck 	I could be lucking
you could be lucking
she could be lucking
we could be lucking
you could be lucking
they could be lucking	I could have lucked
you could have lucked
she could have lucked
we could have lucked
you could have lucked
they could have lucked	I could have been lucking
you could have been lucking
she could have been lucking
we could have been lucking
you could have been lucking
they could have been lucking	

Negation 	
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I could not luck
you could not luck
she could not luck
we could not luck
you could not luck
they could not luck 	I could not be lucking
you could not be lucking
she could not be lucking
we could not be lucking
you could not be lucking
they could not be lucking	I could not have lucked
you could not have lucked
she could not have lucked
we could not have lucked
you could not have lucked
they could not have lucked	I could not have been lucking
you could not have been lucking
she could not have been lucking
we could not have been lucking
you could not have been lucking
they could not have been lucking	

Interrogative form 	
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could I luck?
could you luck?
could she luck?
could we luck?
could you luck?
could they luck? 	could I be lucking?
could you be lucking?
could she be lucking?
could we be lucking?
could you be lucking?
could they be lucking? 	could I have lucked?
could you have lucked?
could she have lucked?
could we have lucked?
could you have lucked?
could they have lucked? 	could I have been lucking?
could you have been lucking?
could she have been lucking?
could we have been lucking?
could you have been lucking?
could they have been lucking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not luck?
could you not luck?
could she not luck?
could we not luck?
could you not luck?
could they not luck? 	could I not be lucking?
could you not be lucking?
could she not be lucking?
could we not be lucking?
could you not be lucking?
could they not be lucking? 	could I not have lucked?
could you not have lucked?
could she not have lucked?
could we not have lucked?
could you not have lucked?
could they not have lucked? 	could I not have been lucking?
could you not have been lucking?
could she not have been lucking?
could we not have been lucking?
could you not have been lucking?
could they not have been lucking?