I must regurgitate you must regurgitate she must regurgitate we must regurgitate you must regurgitate they must regurgitate
V-ing form
I must be regurgitating you must be regurgitating she must be regurgitating we must be regurgitating you must be regurgitating they must be regurgitating
Perfect
I must have regurgitated you must have regurgitated she must have regurgitated we must have regurgitated you must have regurgitated they must have regurgitated
V-ing perfect
I must have been regurgitating you must have been regurgitating she must have been regurgitating we must have been regurgitating you must have been regurgitating they must have been regurgitating
Negation
Simple form
I must not regurgitate you must not regurgitate she must not regurgitate we must not regurgitate you must not regurgitate they must not regurgitate
V-ing form
I must not be regurgitating you must not be regurgitating she must not be regurgitating we must not be regurgitating you must not be regurgitating they must not be regurgitating
Perfect
I must not have regurgitated you must not have regurgitated she must not have regurgitated we must not have regurgitated you must not have regurgitated they must not have regurgitated
V-ing perfect
I must not have been regurgitating you must not have been regurgitating she must not have been regurgitating we must not have been regurgitating you must not have been regurgitating they must not have been regurgitating
Interrogative form
Simple form
must I regurgitate? must you regurgitate? must she regurgitate? must we regurgitate? must you regurgitate? must they regurgitate?
V-ing form
must I be regurgitating? must you be regurgitating? must she be regurgitating? must we be regurgitating? must you be regurgitating? must they be regurgitating?
Perfect
must I have regurgitated? must you have regurgitated? must she have regurgitated? must we have regurgitated? must you have regurgitated? must they have regurgitated?
V-ing perfect
must I have been regurgitating? must you have been regurgitating? must she have been regurgitating? must we have been regurgitating? must you have been regurgitating? must they have been regurgitating?
Interro-negative form
Simple form
must I not regurgitate? must you not regurgitate? must she not regurgitate? must we not regurgitate? must you not regurgitate? must they not regurgitate?
V-ing form
must I not be regurgitating? must you not be regurgitating? must she not be regurgitating? must we not be regurgitating? must you not be regurgitating? must they not be regurgitating?
Perfect
must I not have regurgitated? must you not have regurgitated? must she not have regurgitated? must we not have regurgitated? must you not have regurgitated? must they not have regurgitated?
V-ing perfect
must I not have been regurgitating? must you not have been regurgitating? must she not have been regurgitating? must we not have been regurgitating? must you not have been regurgitating? must they not have been regurgitating?