can sap
Verbe régulier : sap - sapped- sapped
Traduction française : saper (US) - assommer (d'un coup de gourdin) 

Affirmation 	
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I can sap
you can sap
he can sap
we can sap
you can sap
they can sap 	I can be sapping
you can be sapping
he can be sapping
we can be sapping
you can be sapping
they can be sapping	I can have sapped
you can have sapped
he can have sapped
we can have sapped
you can have sapped
they can have sapped	I can have been sapping
you can have been sapping
he can have been sapping
we can have been sapping
you can have been sapping
they can have been sapping	

Négation 	
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I can't sap
you can't sap
he can't sap
we can't sap
you can't sap
they can't sap 	I can't be sapping
you can't be sapping
he can't be sapping
we can't be sapping
you can't be sapping
they can't be sapping	I can't have sapped
you can't have sapped
he can't have sapped
we can't have sapped
you can't have sapped
they can't have sapped	I can't have been sapping
you can't have been sapping
he can't have been sapping
we can't have been sapping
you can't have been sapping
they can't have been sapping	

Forme interrogative 	
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can I sap?
can you sap?
can he sap?
can we sap?
can you sap?
can they sap? 	can I be sapping?
can you be sapping?
can he be sapping?
can we be sapping?
can you be sapping?
can they be sapping? 	can I have sapped?
can you have sapped?
can he have sapped?
can we have sapped?
can you have sapped?
can they have sapped? 	can I have been sapping?
can you have been sapping?
can he have been sapping?
can we have been sapping?
can you have been sapping?
can they have been sapping? 	

Forme interro-négative 	
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can't I sap?
can't you sap?
can't he sap?
can't we sap?
can't you sap?
can't they sap? 	can't I be sapping?
can't you be sapping?
can't he be sapping?
can't we be sapping?
can't you be sapping?
can't they be sapping? 	can't I have sapped?
can't you have sapped?
can't he have sapped?
can't we have sapped?
can't you have sapped?
can't they have sapped? 	can't I have been sapping?
can't you have been sapping?
can't he have been sapping?
can't we have been sapping?
can't you have been sapping?
can't they have been sapping?