I must augment you must augment she must augment we must augment you must augment they must augment
V-ing form
I must be augmenting you must be augmenting she must be augmenting we must be augmenting you must be augmenting they must be augmenting
Perfect
I must have augmented you must have augmented she must have augmented we must have augmented you must have augmented they must have augmented
V-ing perfect
I must have been augmenting you must have been augmenting she must have been augmenting we must have been augmenting you must have been augmenting they must have been augmenting
Negation
Simple form
I must not augment you must not augment she must not augment we must not augment you must not augment they must not augment
V-ing form
I must not be augmenting you must not be augmenting she must not be augmenting we must not be augmenting you must not be augmenting they must not be augmenting
Perfect
I must not have augmented you must not have augmented she must not have augmented we must not have augmented you must not have augmented they must not have augmented
V-ing perfect
I must not have been augmenting you must not have been augmenting she must not have been augmenting we must not have been augmenting you must not have been augmenting they must not have been augmenting
Interrogative form
Simple form
must I augment? must you augment? must she augment? must we augment? must you augment? must they augment?
V-ing form
must I be augmenting? must you be augmenting? must she be augmenting? must we be augmenting? must you be augmenting? must they be augmenting?
Perfect
must I have augmented? must you have augmented? must she have augmented? must we have augmented? must you have augmented? must they have augmented?
V-ing perfect
must I have been augmenting? must you have been augmenting? must she have been augmenting? must we have been augmenting? must you have been augmenting? must they have been augmenting?
Interro-negative form
Simple form
must I not augment? must you not augment? must she not augment? must we not augment? must you not augment? must they not augment?
V-ing form
must I not be augmenting? must you not be augmenting? must she not be augmenting? must we not be augmenting? must you not be augmenting? must they not be augmenting?
Perfect
must I not have augmented? must you not have augmented? must she not have augmented? must we not have augmented? must you not have augmented? must they not have augmented?
V-ing perfect
must I not have been augmenting? must you not have been augmenting? must she not have been augmenting? must we not have been augmenting? must you not have been augmenting? must they not have been augmenting?