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 can't precheck
you can't precheck
he can't precheck
we can't precheck
you can't precheck
they can't precheck 	I can't be prechecking
you can't be prechecking
he can't be prechecking
we can't be prechecking
you can't be prechecking
they can't be prechecking	I can't have prechecked
you can't have prechecked
he can't have prechecked
we can't have prechecked
you can't have prechecked
they can't have prechecked	I can't have been prechecking
you can't have been prechecking
he can't have been prechecking
we can't have been prechecking
you can't have been prechecking
they can't 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't I precheck?
can't you precheck?
can't he precheck?
can't we precheck?
can't you precheck?
can't they precheck? 	can't I be prechecking?
can't you be prechecking?
can't he be prechecking?
can't we be prechecking?
can't you be prechecking?
can't they be prechecking? 	can't I have prechecked?
can't you have prechecked?
can't he have prechecked?
can't we have prechecked?
can't you have prechecked?
can't they have prechecked? 	can't I have been prechecking?
can't you have been prechecking?
can't he have been prechecking?
can't we have been prechecking?
can't you have been prechecking?
can't they have been prechecking?