can precheck
Verbe régulier : precheck - prechecked- prechecked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can precheck
you can precheck
he can precheck
we can precheck
you can precheck
they can precheck 	I can be prechecking
you can be prechecking
he can be prechecking
we can be prechecking
you can be prechecking
they can be prechecking	I can have prechecked
you can have prechecked
he can have prechecked
we can have prechecked
you can have prechecked
they can have prechecked	I can have been prechecking
you can have been prechecking
he can have been prechecking
we can have been prechecking
you can have been prechecking
they can have been prechecking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot precheck
you cannot precheck
he cannot precheck
we cannot precheck
you cannot precheck
they cannot precheck 	I cannot be prechecking
you cannot be prechecking
he cannot be prechecking
we cannot be prechecking
you cannot be prechecking
they cannot be prechecking	I cannot have prechecked
you cannot have prechecked
he cannot have prechecked
we cannot have prechecked
you cannot have prechecked
they cannot have prechecked	I cannot have been prechecking
you cannot have been prechecking
he cannot have been prechecking
we cannot have been prechecking
you cannot have been prechecking
they cannot have been prechecking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I precheck?
can you precheck?
can he precheck?
can we precheck?
can you precheck?
can they precheck? 	can I be prechecking?
can you be prechecking?
can he be prechecking?
can we be prechecking?
can you be prechecking?
can they be prechecking? 	can I have prechecked?
can you have prechecked?
can he have prechecked?
can we have prechecked?
can you have prechecked?
can they have prechecked? 	can I have been prechecking?
can you have been prechecking?
can he have been prechecking?
can we have been prechecking?
can you have been prechecking?
can they have been prechecking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not precheck?
can you not precheck?
can he not precheck?
can we not precheck?
can you not precheck?
can they not precheck? 	can I not be prechecking?
can you not be prechecking?
can he not be prechecking?
can we not be prechecking?
can you not be prechecking?
can they not be prechecking? 	can I not have prechecked?
can you not have prechecked?
can he not have prechecked?
can we not have prechecked?
can you not have prechecked?
can they not have prechecked? 	can I not have been prechecking?
can you not have been prechecking?
can he not have been prechecking?
can we not have been prechecking?
can you not have been prechecking?
can they not have been prechecking?