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 must not cover blanket you must not cover blanket she must not cover blanket we must not cover blanket you must not cover blanket they must not cover blanket
V-ing form
I must not be cover blanketing you must not be cover blanketing she must not be cover blanketing we must not be cover blanketing you must not be cover blanketing they must not be cover blanketing
Perfect
I must not have cover blanketed you must not have cover blanketed she must not have cover blanketed we must not have cover blanketed you must not have cover blanketed they must not have cover blanketed
V-ing perfect
I must not have been cover blanketing you must not have been cover blanketing she must not have been cover blanketing we must not have been cover blanketing you must not have been cover blanketing they must not 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
must I not cover blanket? must you not cover blanket? must she not cover blanket? must we not cover blanket? must you not cover blanket? must they not cover blanket?
V-ing form
must I not be cover blanketing? must you not be cover blanketing? must she not be cover blanketing? must we not be cover blanketing? must you not be cover blanketing? must they not be cover blanketing?
Perfect
must I not have cover blanketed? must you not have cover blanketed? must she not have cover blanketed? must we not have cover blanketed? must you not have cover blanketed? must they not have cover blanketed?
V-ing perfect
must I not have been cover blanketing? must you not have been cover blanketing? must she not have been cover blanketing? must we not have been cover blanketing? must you not have been cover blanketing? must they not have been cover blanketing?