Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must cover blanket you must cover blanket she must cover blanket we must cover blanket you must cover blanket they must cover blanket
V-ing form
I must be cover blanketing you must be cover blanketing she must be cover blanketing we must be cover blanketing you must be cover blanketing they must be cover blanketing
Perfect
I must have cover blanketed you must have cover blanketed she must have cover blanketed we must have cover blanketed you must have cover blanketed they must have cover blanketed
V-ing perfect
I must have been cover blanketing you must have been cover blanketing she must have been cover blanketing we must have been cover blanketing you must have been cover blanketing they must have been cover blanketing
Negation
Simple form
I mustn't cover blanket you mustn't cover blanket she mustn't cover blanket we mustn't cover blanket you mustn't cover blanket they mustn't cover blanket
V-ing form
I mustn't be cover blanketing you mustn't be cover blanketing she mustn't be cover blanketing we mustn't be cover blanketing you mustn't be cover blanketing they mustn't be cover blanketing
Perfect
I mustn't have cover blanketed you mustn't have cover blanketed she mustn't have cover blanketed we mustn't have cover blanketed you mustn't have cover blanketed they mustn't have cover blanketed
V-ing perfect
I mustn't have been cover blanketing you mustn't have been cover blanketing she mustn't have been cover blanketing we mustn't have been cover blanketing you mustn't have been cover blanketing they mustn't have been cover blanketing
Interrogative form
Simple form
must I cover blanket? must you cover blanket? must she cover blanket? must we cover blanket? must you cover blanket? must they cover blanket?
V-ing form
must I be cover blanketing? must you be cover blanketing? must she be cover blanketing? must we be cover blanketing? must you be cover blanketing? must they be cover blanketing?
Perfect
must I have cover blanketed? must you have cover blanketed? must she have cover blanketed? must we have cover blanketed? must you have cover blanketed? must they have cover blanketed?
V-ing perfect
must I have been cover blanketing? must you have been cover blanketing? must she have been cover blanketing? must we have been cover blanketing? must you have been cover blanketing? must they have been cover blanketing?
Interro-negative form
Simple form
mustn't I cover blanket? mustn't you cover blanket? mustn't she cover blanket? mustn't we cover blanket? mustn't you cover blanket? mustn't they cover blanket?
V-ing form
mustn't I be cover blanketing? mustn't you be cover blanketing? mustn't she be cover blanketing? mustn't we be cover blanketing? mustn't you be cover blanketing? mustn't they be cover blanketing?
Perfect
mustn't I have cover blanketed? mustn't you have cover blanketed? mustn't she have cover blanketed? mustn't we have cover blanketed? mustn't you have cover blanketed? mustn't they have cover blanketed?
V-ing perfect
mustn't I have been cover blanketing? mustn't you have been cover blanketing? mustn't she have been cover blanketing? mustn't we have been cover blanketing? mustn't you have been cover blanketing? mustn't they have been cover blanketing?