I must undermine you must undermine he must undermine we must undermine you must undermine they must undermine
Forme en V-ing
I must be undermining you must be undermining he must be undermining we must be undermining you must be undermining they must be undermining
Perfect
I must have undermined you must have undermined he must have undermined we must have undermined you must have undermined they must have undermined
Perfect en V-ing
I must have been undermining you must have been undermining he must have been undermining we must have been undermining you must have been undermining they must have been undermining
Négation
Forme simple
I must not undermine you must not undermine he must not undermine we must not undermine you must not undermine they must not undermine
Forme en V-ing
I must not be undermining you must not be undermining he must not be undermining we must not be undermining you must not be undermining they must not be undermining
Perfect
I must not have undermined you must not have undermined he must not have undermined we must not have undermined you must not have undermined they must not have undermined
Perfect en V-ing
I must not have been undermining you must not have been undermining he must not have been undermining we must not have been undermining you must not have been undermining they must not have been undermining
Forme interrogative
Forme simple
must I undermine? must you undermine? must he undermine? must we undermine? must you undermine? must they undermine?
Forme en V-ing
must I be undermining? must you be undermining? must he be undermining? must we be undermining? must you be undermining? must they be undermining?
Perfect
must I have undermined? must you have undermined? must he have undermined? must we have undermined? must you have undermined? must they have undermined?
Perfect en V-ing
must I have been undermining? must you have been undermining? must he have been undermining? must we have been undermining? must you have been undermining? must they have been undermining?
Forme interro-négative
Forme simple
must I not undermine? must you not undermine? must he not undermine? must we not undermine? must you not undermine? must they not undermine?
Forme en V-ing
must I not be undermining? must you not be undermining? must he not be undermining? must we not be undermining? must you not be undermining? must they not be undermining?
Perfect
must I not have undermined? must you not have undermined? must he not have undermined? must we not have undermined? must you not have undermined? must they not have undermined?
Perfect en V-ing
must I not have been undermining? must you not have been undermining? must he not have been undermining? must we not have been undermining? must you not have been undermining? must they not have been undermining?