could burke
Regular verb: burke - burked- burked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could burke
you could burke
he could burke
we could burke
you could burke
they could burke 	I could be burking
you could be burking
he could be burking
we could be burking
you could be burking
they could be burking	I could have burked
you could have burked
he could have burked
we could have burked
you could have burked
they could have burked	I could have been burking
you could have been burking
he could have been burking
we could have been burking
you could have been burking
they could have been burking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't burke
you couldn't burke
he couldn't burke
we couldn't burke
you couldn't burke
they couldn't burke 	I couldn't be burking
you couldn't be burking
he couldn't be burking
we couldn't be burking
you couldn't be burking
they couldn't be burking	I couldn't have burked
you couldn't have burked
he couldn't have burked
we couldn't have burked
you couldn't have burked
they couldn't have burked	I couldn't have been burking
you couldn't have been burking
he couldn't have been burking
we couldn't have been burking
you couldn't have been burking
they couldn't have been burking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I burke?
could you burke?
could he burke?
could we burke?
could you burke?
could they burke? 	could I be burking?
could you be burking?
could he be burking?
could we be burking?
could you be burking?
could they be burking? 	could I have burked?
could you have burked?
could he have burked?
could we have burked?
could you have burked?
could they have burked? 	could I have been burking?
could you have been burking?
could he have been burking?
could we have been burking?
could you have been burking?
could they have been burking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I burke?
couldn't you burke?
couldn't he burke?
couldn't we burke?
couldn't you burke?
couldn't they burke? 	couldn't I be burking?
couldn't you be burking?
couldn't he be burking?
couldn't we be burking?
couldn't you be burking?
couldn't they be burking? 	couldn't I have burked?
couldn't you have burked?
couldn't he have burked?
couldn't we have burked?
couldn't you have burked?
couldn't they have burked? 	couldn't I have been burking?
couldn't you have been burking?
couldn't he have been burking?
couldn't we have been burking?
couldn't you have been burking?
couldn't they have been burking?