could preclean
Verbe régulier : preclean - precleaned- precleaned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could preclean
you could preclean
he could preclean
we could preclean
you could preclean
they could preclean 	I could be precleaning
you could be precleaning
he could be precleaning
we could be precleaning
you could be precleaning
they could be precleaning	I could have precleaned
you could have precleaned
he could have precleaned
we could have precleaned
you could have precleaned
they could have precleaned	I could have been precleaning
you could have been precleaning
he could have been precleaning
we could have been precleaning
you could have been precleaning
they could have been precleaning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't preclean
you couldn't preclean
he couldn't preclean
we couldn't preclean
you couldn't preclean
they couldn't preclean 	I couldn't be precleaning
you couldn't be precleaning
he couldn't be precleaning
we couldn't be precleaning
you couldn't be precleaning
they couldn't be precleaning	I couldn't have precleaned
you couldn't have precleaned
he couldn't have precleaned
we couldn't have precleaned
you couldn't have precleaned
they couldn't have precleaned	I couldn't have been precleaning
you couldn't have been precleaning
he couldn't have been precleaning
we couldn't have been precleaning
you couldn't have been precleaning
they couldn't have been precleaning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I preclean?
could you preclean?
could he preclean?
could we preclean?
could you preclean?
could they preclean? 	could I be precleaning?
could you be precleaning?
could he be precleaning?
could we be precleaning?
could you be precleaning?
could they be precleaning? 	could I have precleaned?
could you have precleaned?
could he have precleaned?
could we have precleaned?
could you have precleaned?
could they have precleaned? 	could I have been precleaning?
could you have been precleaning?
could he have been precleaning?
could we have been precleaning?
could you have been precleaning?
could they have been precleaning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I preclean?
couldn't you preclean?
couldn't he preclean?
couldn't we preclean?
couldn't you preclean?
couldn't they preclean? 	couldn't I be precleaning?
couldn't you be precleaning?
couldn't he be precleaning?
couldn't we be precleaning?
couldn't you be precleaning?
couldn't they be precleaning? 	couldn't I have precleaned?
couldn't you have precleaned?
couldn't he have precleaned?
couldn't we have precleaned?
couldn't you have precleaned?
couldn't they have precleaned? 	couldn't I have been precleaning?
couldn't you have been precleaning?
couldn't he have been precleaning?
couldn't we have been precleaning?
couldn't you have been precleaning?
couldn't they have been precleaning?