I must click you must click she must click we must click you must click they must click
V-ing form
I must be clicking you must be clicking she must be clicking we must be clicking you must be clicking they must be clicking
Perfect
I must have clicked you must have clicked she must have clicked we must have clicked you must have clicked they must have clicked
V-ing perfect
I must have been clicking you must have been clicking she must have been clicking we must have been clicking you must have been clicking they must have been clicking
Negation
Simple form
I must not click you must not click she must not click we must not click you must not click they must not click
V-ing form
I must not be clicking you must not be clicking she must not be clicking we must not be clicking you must not be clicking they must not be clicking
Perfect
I must not have clicked you must not have clicked she must not have clicked we must not have clicked you must not have clicked they must not have clicked
V-ing perfect
I must not have been clicking you must not have been clicking she must not have been clicking we must not have been clicking you must not have been clicking they must not have been clicking
Interrogative form
Simple form
must I click? must you click? must she click? must we click? must you click? must they click?
V-ing form
must I be clicking? must you be clicking? must she be clicking? must we be clicking? must you be clicking? must they be clicking?
Perfect
must I have clicked? must you have clicked? must she have clicked? must we have clicked? must you have clicked? must they have clicked?
V-ing perfect
must I have been clicking? must you have been clicking? must she have been clicking? must we have been clicking? must you have been clicking? must they have been clicking?
Interro-negative form
Simple form
must I not click? must you not click? must she not click? must we not click? must you not click? must they not click?
V-ing form
must I not be clicking? must you not be clicking? must she not be clicking? must we not be clicking? must you not be clicking? must they not be clicking?
Perfect
must I not have clicked? must you not have clicked? must she not have clicked? must we not have clicked? must you not have clicked? must they not have clicked?
V-ing perfect
must I not have been clicking? must you not have been clicking? must she not have been clicking? must we not have been clicking? must you not have been clicking? must they not have been clicking?