I must spoke you must spoke she must spoke we must spoke you must spoke they must spoke
V-ing form
I must be spoking you must be spoking she must be spoking we must be spoking you must be spoking they must be spoking
Perfect
I must have spoked you must have spoked she must have spoked we must have spoked you must have spoked they must have spoked
V-ing perfect
I must have been spoking you must have been spoking she must have been spoking we must have been spoking you must have been spoking they must have been spoking
Negation
Simple form
I mustn't spoke you mustn't spoke she mustn't spoke we mustn't spoke you mustn't spoke they mustn't spoke
V-ing form
I mustn't be spoking you mustn't be spoking she mustn't be spoking we mustn't be spoking you mustn't be spoking they mustn't be spoking
Perfect
I mustn't have spoked you mustn't have spoked she mustn't have spoked we mustn't have spoked you mustn't have spoked they mustn't have spoked
V-ing perfect
I mustn't have been spoking you mustn't have been spoking she mustn't have been spoking we mustn't have been spoking you mustn't have been spoking they mustn't have been spoking
Interrogative form
Simple form
must I spoke? must you spoke? must she spoke? must we spoke? must you spoke? must they spoke?
V-ing form
must I be spoking? must you be spoking? must she be spoking? must we be spoking? must you be spoking? must they be spoking?
Perfect
must I have spoked? must you have spoked? must she have spoked? must we have spoked? must you have spoked? must they have spoked?
V-ing perfect
must I have been spoking? must you have been spoking? must she have been spoking? must we have been spoking? must you have been spoking? must they have been spoking?
Interro-negative form
Simple form
mustn't I spoke? mustn't you spoke? mustn't she spoke? mustn't we spoke? mustn't you spoke? mustn't they spoke?
V-ing form
mustn't I be spoking? mustn't you be spoking? mustn't she be spoking? mustn't we be spoking? mustn't you be spoking? mustn't they be spoking?
Perfect
mustn't I have spoked? mustn't you have spoked? mustn't she have spoked? mustn't we have spoked? mustn't you have spoked? mustn't they have spoked?
V-ing perfect
mustn't I have been spoking? mustn't you have been spoking? mustn't she have been spoking? mustn't we have been spoking? mustn't you have been spoking? mustn't they have been spoking?