I can countercheck you can countercheck he can countercheck we can countercheck you can countercheck they can countercheck
Forme en V-ing
I can be counterchecking you can be counterchecking he can be counterchecking we can be counterchecking you can be counterchecking they can be counterchecking
Perfect
I can have counterchecked you can have counterchecked he can have counterchecked we can have counterchecked you can have counterchecked they can have counterchecked
Perfect en V-ing
I can have been counterchecking you can have been counterchecking he can have been counterchecking we can have been counterchecking you can have been counterchecking they can have been counterchecking
Négation
Forme simple
I cannot countercheck you cannot countercheck he cannot countercheck we cannot countercheck you cannot countercheck they cannot countercheck
Forme en V-ing
I cannot be counterchecking you cannot be counterchecking he cannot be counterchecking we cannot be counterchecking you cannot be counterchecking they cannot be counterchecking
Perfect
I cannot have counterchecked you cannot have counterchecked he cannot have counterchecked we cannot have counterchecked you cannot have counterchecked they cannot have counterchecked
Perfect en V-ing
I cannot have been counterchecking you cannot have been counterchecking he cannot have been counterchecking we cannot have been counterchecking you cannot have been counterchecking they cannot have been counterchecking
Forme interrogative
Forme simple
can I countercheck? can you countercheck? can he countercheck? can we countercheck? can you countercheck? can they countercheck?
Forme en V-ing
can I be counterchecking? can you be counterchecking? can he be counterchecking? can we be counterchecking? can you be counterchecking? can they be counterchecking?
Perfect
can I have counterchecked? can you have counterchecked? can he have counterchecked? can we have counterchecked? can you have counterchecked? can they have counterchecked?
Perfect en V-ing
can I have been counterchecking? can you have been counterchecking? can he have been counterchecking? can we have been counterchecking? can you have been counterchecking? can they have been counterchecking?
Forme interro-négative
Forme simple
can I not countercheck? can you not countercheck? can he not countercheck? can we not countercheck? can you not countercheck? can they not countercheck?
Forme en V-ing
can I not be counterchecking? can you not be counterchecking? can he not be counterchecking? can we not be counterchecking? can you not be counterchecking? can they not be counterchecking?
Perfect
can I not have counterchecked? can you not have counterchecked? can he not have counterchecked? can we not have counterchecked? can you not have counterchecked? can they not have counterchecked?
Perfect en V-ing
can I not have been counterchecking? can you not have been counterchecking? can he not have been counterchecking? can we not have been counterchecking? can you not have been counterchecking? can they not have been counterchecking?