I must easternise you must easternise he must easternise we must easternise you must easternise they must easternise
V-ing form
I must be easternising you must be easternising he must be easternising we must be easternising you must be easternising they must be easternising
Perfect
I must have easternised you must have easternised he must have easternised we must have easternised you must have easternised they must have easternised
V-ing perfect
I must have been easternising you must have been easternising he must have been easternising we must have been easternising you must have been easternising they must have been easternising
Negation
Simple form
I must not easternise you must not easternise he must not easternise we must not easternise you must not easternise they must not easternise
V-ing form
I must not be easternising you must not be easternising he must not be easternising we must not be easternising you must not be easternising they must not be easternising
Perfect
I must not have easternised you must not have easternised he must not have easternised we must not have easternised you must not have easternised they must not have easternised
V-ing perfect
I must not have been easternising you must not have been easternising he must not have been easternising we must not have been easternising you must not have been easternising they must not have been easternising
Interrogative form
Simple form
must I easternise? must you easternise? must he easternise? must we easternise? must you easternise? must they easternise?
V-ing form
must I be easternising? must you be easternising? must he be easternising? must we be easternising? must you be easternising? must they be easternising?
Perfect
must I have easternised? must you have easternised? must he have easternised? must we have easternised? must you have easternised? must they have easternised?
V-ing perfect
must I have been easternising? must you have been easternising? must he have been easternising? must we have been easternising? must you have been easternising? must they have been easternising?
Interro-negative form
Simple form
must I not easternise? must you not easternise? must he not easternise? must we not easternise? must you not easternise? must they not easternise?
V-ing form
must I not be easternising? must you not be easternising? must he not be easternising? must we not be easternising? must you not be easternising? must they not be easternising?
Perfect
must I not have easternised? must you not have easternised? must he not have easternised? must we not have easternised? must you not have easternised? must they not have easternised?
V-ing perfect
must I not have been easternising? must you not have been easternising? must he not have been easternising? must we not have been easternising? must you not have been easternising? must they not have been easternising?