I must gossip you must gossip he must gossip we must gossip you must gossip they must gossip
V-ing form
I must be gossiping you must be gossiping he must be gossiping we must be gossiping you must be gossiping they must be gossiping
Perfect
I must have gossiped you must have gossiped he must have gossiped we must have gossiped you must have gossiped they must have gossiped
V-ing perfect
I must have been gossiping you must have been gossiping he must have been gossiping we must have been gossiping you must have been gossiping they must have been gossiping
Negation
Simple form
I mustn't gossip you mustn't gossip he mustn't gossip we mustn't gossip you mustn't gossip they mustn't gossip
V-ing form
I mustn't be gossiping you mustn't be gossiping he mustn't be gossiping we mustn't be gossiping you mustn't be gossiping they mustn't be gossiping
Perfect
I mustn't have gossiped you mustn't have gossiped he mustn't have gossiped we mustn't have gossiped you mustn't have gossiped they mustn't have gossiped
V-ing perfect
I mustn't have been gossiping you mustn't have been gossiping he mustn't have been gossiping we mustn't have been gossiping you mustn't have been gossiping they mustn't have been gossiping
Interrogative form
Simple form
must I gossip? must you gossip? must he gossip? must we gossip? must you gossip? must they gossip?
V-ing form
must I be gossiping? must you be gossiping? must he be gossiping? must we be gossiping? must you be gossiping? must they be gossiping?
Perfect
must I have gossiped? must you have gossiped? must he have gossiped? must we have gossiped? must you have gossiped? must they have gossiped?
V-ing perfect
must I have been gossiping? must you have been gossiping? must he have been gossiping? must we have been gossiping? must you have been gossiping? must they have been gossiping?
Interro-negative form
Simple form
mustn't I gossip? mustn't you gossip? mustn't he gossip? mustn't we gossip? mustn't you gossip? mustn't they gossip?
V-ing form
mustn't I be gossiping? mustn't you be gossiping? mustn't he be gossiping? mustn't we be gossiping? mustn't you be gossiping? mustn't they be gossiping?
Perfect
mustn't I have gossiped? mustn't you have gossiped? mustn't he have gossiped? mustn't we have gossiped? mustn't you have gossiped? mustn't they have gossiped?
V-ing perfect
mustn't I have been gossiping? mustn't you have been gossiping? mustn't he have been gossiping? mustn't we have been gossiping? mustn't you have been gossiping? mustn't they have been gossiping?