I must bean you must bean he must bean we must bean you must bean they must bean
V-ing form
I must be beaning you must be beaning he must be beaning we must be beaning you must be beaning they must be beaning
Perfect
I must have beaned you must have beaned he must have beaned we must have beaned you must have beaned they must have beaned
V-ing perfect
I must have been beaning you must have been beaning he must have been beaning we must have been beaning you must have been beaning they must have been beaning
Negation
Simple form
I must not bean you must not bean he must not bean we must not bean you must not bean they must not bean
V-ing form
I must not be beaning you must not be beaning he must not be beaning we must not be beaning you must not be beaning they must not be beaning
Perfect
I must not have beaned you must not have beaned he must not have beaned we must not have beaned you must not have beaned they must not have beaned
V-ing perfect
I must not have been beaning you must not have been beaning he must not have been beaning we must not have been beaning you must not have been beaning they must not have been beaning
Interrogative form
Simple form
must I bean? must you bean? must he bean? must we bean? must you bean? must they bean?
V-ing form
must I be beaning? must you be beaning? must he be beaning? must we be beaning? must you be beaning? must they be beaning?
Perfect
must I have beaned? must you have beaned? must he have beaned? must we have beaned? must you have beaned? must they have beaned?
V-ing perfect
must I have been beaning? must you have been beaning? must he have been beaning? must we have been beaning? must you have been beaning? must they have been beaning?
Interro-negative form
Simple form
must I not bean? must you not bean? must he not bean? must we not bean? must you not bean? must they not bean?
V-ing form
must I not be beaning? must you not be beaning? must he not be beaning? must we not be beaning? must you not be beaning? must they not be beaning?
Perfect
must I not have beaned? must you not have beaned? must he not have beaned? must we not have beaned? must you not have beaned? must they not have beaned?
V-ing perfect
must I not have been beaning? must you not have been beaning? must he not have been beaning? must we not have been beaning? must you not have been beaning? must they not have been beaning?