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