I can backcross you can backcross he can backcross we can backcross you can backcross they can backcross
Forme en V-ing
I can be backcrossing you can be backcrossing he can be backcrossing we can be backcrossing you can be backcrossing they can be backcrossing
Perfect
I can have backcrossed you can have backcrossed he can have backcrossed we can have backcrossed you can have backcrossed they can have backcrossed
Perfect en V-ing
I can have been backcrossing you can have been backcrossing he can have been backcrossing we can have been backcrossing you can have been backcrossing they can have been backcrossing
Négation
Forme simple
I can't backcross you can't backcross he can't backcross we can't backcross you can't backcross they can't backcross
Forme en V-ing
I can't be backcrossing you can't be backcrossing he can't be backcrossing we can't be backcrossing you can't be backcrossing they can't be backcrossing
Perfect
I can't have backcrossed you can't have backcrossed he can't have backcrossed we can't have backcrossed you can't have backcrossed they can't have backcrossed
Perfect en V-ing
I can't have been backcrossing you can't have been backcrossing he can't have been backcrossing we can't have been backcrossing you can't have been backcrossing they can't have been backcrossing
Forme interrogative
Forme simple
can I backcross? can you backcross? can he backcross? can we backcross? can you backcross? can they backcross?
Forme en V-ing
can I be backcrossing? can you be backcrossing? can he be backcrossing? can we be backcrossing? can you be backcrossing? can they be backcrossing?
Perfect
can I have backcrossed? can you have backcrossed? can he have backcrossed? can we have backcrossed? can you have backcrossed? can they have backcrossed?
Perfect en V-ing
can I have been backcrossing? can you have been backcrossing? can he have been backcrossing? can we have been backcrossing? can you have been backcrossing? can they have been backcrossing?
Forme interro-négative
Forme simple
can't I backcross? can't you backcross? can't he backcross? can't we backcross? can't you backcross? can't they backcross?
Forme en V-ing
can't I be backcrossing? can't you be backcrossing? can't he be backcrossing? can't we be backcrossing? can't you be backcrossing? can't they be backcrossing?
Perfect
can't I have backcrossed? can't you have backcrossed? can't he have backcrossed? can't we have backcrossed? can't you have backcrossed? can't they have backcrossed?
Perfect en V-ing
can't I have been backcrossing? can't you have been backcrossing? can't he have been backcrossing? can't we have been backcrossing? can't you have been backcrossing? can't they have been backcrossing?