I must scramble you must scramble she must scramble we must scramble you must scramble they must scramble
V-ing form
I must be scrambling you must be scrambling she must be scrambling we must be scrambling you must be scrambling they must be scrambling
Perfect
I must have scrambled you must have scrambled she must have scrambled we must have scrambled you must have scrambled they must have scrambled
V-ing perfect
I must have been scrambling you must have been scrambling she must have been scrambling we must have been scrambling you must have been scrambling they must have been scrambling
Negation
Simple form
I must not scramble you must not scramble she must not scramble we must not scramble you must not scramble they must not scramble
V-ing form
I must not be scrambling you must not be scrambling she must not be scrambling we must not be scrambling you must not be scrambling they must not be scrambling
Perfect
I must not have scrambled you must not have scrambled she must not have scrambled we must not have scrambled you must not have scrambled they must not have scrambled
V-ing perfect
I must not have been scrambling you must not have been scrambling she must not have been scrambling we must not have been scrambling you must not have been scrambling they must not have been scrambling
Interrogative form
Simple form
must I scramble? must you scramble? must she scramble? must we scramble? must you scramble? must they scramble?
V-ing form
must I be scrambling? must you be scrambling? must she be scrambling? must we be scrambling? must you be scrambling? must they be scrambling?
Perfect
must I have scrambled? must you have scrambled? must she have scrambled? must we have scrambled? must you have scrambled? must they have scrambled?
V-ing perfect
must I have been scrambling? must you have been scrambling? must she have been scrambling? must we have been scrambling? must you have been scrambling? must they have been scrambling?
Interro-negative form
Simple form
must I not scramble? must you not scramble? must she not scramble? must we not scramble? must you not scramble? must they not scramble?
V-ing form
must I not be scrambling? must you not be scrambling? must she not be scrambling? must we not be scrambling? must you not be scrambling? must they not be scrambling?
Perfect
must I not have scrambled? must you not have scrambled? must she not have scrambled? must we not have scrambled? must you not have scrambled? must they not have scrambled?
V-ing perfect
must I not have been scrambling? must you not have been scrambling? must she not have been scrambling? must we not have been scrambling? must you not have been scrambling? must they not have been scrambling?