I must moisten you must moisten she must moisten we must moisten you must moisten they must moisten
V-ing form
I must be moistening you must be moistening she must be moistening we must be moistening you must be moistening they must be moistening
Perfect
I must have moistened you must have moistened she must have moistened we must have moistened you must have moistened they must have moistened
V-ing perfect
I must have been moistening you must have been moistening she must have been moistening we must have been moistening you must have been moistening they must have been moistening
Negation
Simple form
I mustn't moisten you mustn't moisten she mustn't moisten we mustn't moisten you mustn't moisten they mustn't moisten
V-ing form
I mustn't be moistening you mustn't be moistening she mustn't be moistening we mustn't be moistening you mustn't be moistening they mustn't be moistening
Perfect
I mustn't have moistened you mustn't have moistened she mustn't have moistened we mustn't have moistened you mustn't have moistened they mustn't have moistened
V-ing perfect
I mustn't have been moistening you mustn't have been moistening she mustn't have been moistening we mustn't have been moistening you mustn't have been moistening they mustn't have been moistening
Interrogative form
Simple form
must I moisten? must you moisten? must she moisten? must we moisten? must you moisten? must they moisten?
V-ing form
must I be moistening? must you be moistening? must she be moistening? must we be moistening? must you be moistening? must they be moistening?
Perfect
must I have moistened? must you have moistened? must she have moistened? must we have moistened? must you have moistened? must they have moistened?
V-ing perfect
must I have been moistening? must you have been moistening? must she have been moistening? must we have been moistening? must you have been moistening? must they have been moistening?
Interro-negative form
Simple form
mustn't I moisten? mustn't you moisten? mustn't she moisten? mustn't we moisten? mustn't you moisten? mustn't they moisten?
V-ing form
mustn't I be moistening? mustn't you be moistening? mustn't she be moistening? mustn't we be moistening? mustn't you be moistening? mustn't they be moistening?
Perfect
mustn't I have moistened? mustn't you have moistened? mustn't she have moistened? mustn't we have moistened? mustn't you have moistened? mustn't they have moistened?
V-ing perfect
mustn't I have been moistening? mustn't you have been moistening? mustn't she have been moistening? mustn't we have been moistening? mustn't you have been moistening? mustn't they have been moistening?