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