could slapp
Regular verb: slapp - slapped- slapped

Affirmation 	
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I could slapp
you could slapp
he could slapp
we could slapp
you could slapp
they could slapp 	I could be slapping
you could be slapping
he could be slapping
we could be slapping
you could be slapping
they could be slapping	I could have slapped
you could have slapped
he could have slapped
we could have slapped
you could have slapped
they could have slapped	I could have been slapping
you could have been slapping
he could have been slapping
we could have been slapping
you could have been slapping
they could have been slapping	

Negation 	
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I couldn't slapp
you couldn't slapp
he couldn't slapp
we couldn't slapp
you couldn't slapp
they couldn't slapp 	I couldn't be slapping
you couldn't be slapping
he couldn't be slapping
we couldn't be slapping
you couldn't be slapping
they couldn't be slapping	I couldn't have slapped
you couldn't have slapped
he couldn't have slapped
we couldn't have slapped
you couldn't have slapped
they couldn't have slapped	I couldn't have been slapping
you couldn't have been slapping
he couldn't have been slapping
we couldn't have been slapping
you couldn't have been slapping
they couldn't have been slapping	

Interrogative form 	
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could I slapp?
could you slapp?
could he slapp?
could we slapp?
could you slapp?
could they slapp? 	could I be slapping?
could you be slapping?
could he be slapping?
could we be slapping?
could you be slapping?
could they be slapping? 	could I have slapped?
could you have slapped?
could he have slapped?
could we have slapped?
could you have slapped?
could they have slapped? 	could I have been slapping?
could you have been slapping?
could he have been slapping?
could we have been slapping?
could you have been slapping?
could they have been slapping? 	

Interro-negative form 	
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couldn't I slapp?
couldn't you slapp?
couldn't he slapp?
couldn't we slapp?
couldn't you slapp?
couldn't they slapp? 	couldn't I be slapping?
couldn't you be slapping?
couldn't he be slapping?
couldn't we be slapping?
couldn't you be slapping?
couldn't they be slapping? 	couldn't I have slapped?
couldn't you have slapped?
couldn't he have slapped?
couldn't we have slapped?
couldn't you have slapped?
couldn't they have slapped? 	couldn't I have been slapping?
couldn't you have been slapping?
couldn't he have been slapping?
couldn't we have been slapping?
couldn't you have been slapping?
couldn't they have been slapping?