I must flirt you must flirt she must flirt we must flirt you must flirt they must flirt
V-ing form
I must be flirting you must be flirting she must be flirting we must be flirting you must be flirting they must be flirting
Perfect
I must have flirted you must have flirted she must have flirted we must have flirted you must have flirted they must have flirted
V-ing perfect
I must have been flirting you must have been flirting she must have been flirting we must have been flirting you must have been flirting they must have been flirting
Negation
Simple form
I must not flirt you must not flirt she must not flirt we must not flirt you must not flirt they must not flirt
V-ing form
I must not be flirting you must not be flirting she must not be flirting we must not be flirting you must not be flirting they must not be flirting
Perfect
I must not have flirted you must not have flirted she must not have flirted we must not have flirted you must not have flirted they must not have flirted
V-ing perfect
I must not have been flirting you must not have been flirting she must not have been flirting we must not have been flirting you must not have been flirting they must not have been flirting
Interrogative form
Simple form
must I flirt? must you flirt? must she flirt? must we flirt? must you flirt? must they flirt?
V-ing form
must I be flirting? must you be flirting? must she be flirting? must we be flirting? must you be flirting? must they be flirting?
Perfect
must I have flirted? must you have flirted? must she have flirted? must we have flirted? must you have flirted? must they have flirted?
V-ing perfect
must I have been flirting? must you have been flirting? must she have been flirting? must we have been flirting? must you have been flirting? must they have been flirting?
Interro-negative form
Simple form
must I not flirt? must you not flirt? must she not flirt? must we not flirt? must you not flirt? must they not flirt?
V-ing form
must I not be flirting? must you not be flirting? must she not be flirting? must we not be flirting? must you not be flirting? must they not be flirting?
Perfect
must I not have flirted? must you not have flirted? must she not have flirted? must we not have flirted? must you not have flirted? must they not have flirted?
V-ing perfect
must I not have been flirting? must you not have been flirting? must she not have been flirting? must we not have been flirting? must you not have been flirting? must they not have been flirting?