I must scarify you must scarify she must scarify we must scarify you must scarify they must scarify
V-ing form
I must be scarifying you must be scarifying she must be scarifying we must be scarifying you must be scarifying they must be scarifying
Perfect
I must have scarified you must have scarified she must have scarified we must have scarified you must have scarified they must have scarified
V-ing perfect
I must have been scarifying you must have been scarifying she must have been scarifying we must have been scarifying you must have been scarifying they must have been scarifying
Negation
Simple form
I must not scarify you must not scarify she must not scarify we must not scarify you must not scarify they must not scarify
V-ing form
I must not be scarifying you must not be scarifying she must not be scarifying we must not be scarifying you must not be scarifying they must not be scarifying
Perfect
I must not have scarified you must not have scarified she must not have scarified we must not have scarified you must not have scarified they must not have scarified
V-ing perfect
I must not have been scarifying you must not have been scarifying she must not have been scarifying we must not have been scarifying you must not have been scarifying they must not have been scarifying
Interrogative form
Simple form
must I scarify? must you scarify? must she scarify? must we scarify? must you scarify? must they scarify?
V-ing form
must I be scarifying? must you be scarifying? must she be scarifying? must we be scarifying? must you be scarifying? must they be scarifying?
Perfect
must I have scarified? must you have scarified? must she have scarified? must we have scarified? must you have scarified? must they have scarified?
V-ing perfect
must I have been scarifying? must you have been scarifying? must she have been scarifying? must we have been scarifying? must you have been scarifying? must they have been scarifying?
Interro-negative form
Simple form
must I not scarify? must you not scarify? must she not scarify? must we not scarify? must you not scarify? must they not scarify?
V-ing form
must I not be scarifying? must you not be scarifying? must she not be scarifying? must we not be scarifying? must you not be scarifying? must they not be scarifying?
Perfect
must I not have scarified? must you not have scarified? must she not have scarified? must we not have scarified? must you not have scarified? must they not have scarified?
V-ing perfect
must I not have been scarifying? must you not have been scarifying? must she not have been scarifying? must we not have been scarifying? must you not have been scarifying? must they not have been scarifying?