Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must despair despair you must despair despair he must despair despair we must despair despair you must despair despair they must despair despair
V-ing form
I must be despair despairing you must be despair despairing he must be despair despairing we must be despair despairing you must be despair despairing they must be despair despairing
Perfect
I must have despair despaired you must have despair despaired he must have despair despaired we must have despair despaired you must have despair despaired they must have despair despaired
V-ing perfect
I must have been despair despairing you must have been despair despairing he must have been despair despairing we must have been despair despairing you must have been despair despairing they must have been despair despairing
Negation
Simple form
I must not despair despair you must not despair despair he must not despair despair we must not despair despair you must not despair despair they must not despair despair
V-ing form
I must not be despair despairing you must not be despair despairing he must not be despair despairing we must not be despair despairing you must not be despair despairing they must not be despair despairing
Perfect
I must not have despair despaired you must not have despair despaired he must not have despair despaired we must not have despair despaired you must not have despair despaired they must not have despair despaired
V-ing perfect
I must not have been despair despairing you must not have been despair despairing he must not have been despair despairing we must not have been despair despairing you must not have been despair despairing they must not have been despair despairing
Interrogative form
Simple form
must I despair despair? must you despair despair? must he despair despair? must we despair despair? must you despair despair? must they despair despair?
V-ing form
must I be despair despairing? must you be despair despairing? must he be despair despairing? must we be despair despairing? must you be despair despairing? must they be despair despairing?
Perfect
must I have despair despaired? must you have despair despaired? must he have despair despaired? must we have despair despaired? must you have despair despaired? must they have despair despaired?
V-ing perfect
must I have been despair despairing? must you have been despair despairing? must he have been despair despairing? must we have been despair despairing? must you have been despair despairing? must they have been despair despairing?
Interro-negative form
Simple form
must I not despair despair? must you not despair despair? must he not despair despair? must we not despair despair? must you not despair despair? must they not despair despair?
V-ing form
must I not be despair despairing? must you not be despair despairing? must he not be despair despairing? must we not be despair despairing? must you not be despair despairing? must they not be despair despairing?
Perfect
must I not have despair despaired? must you not have despair despaired? must he not have despair despaired? must we not have despair despaired? must you not have despair despaired? must they not have despair despaired?
V-ing perfect
must I not have been despair despairing? must you not have been despair despairing? must he not have been despair despairing? must we not have been despair despairing? must you not have been despair despairing? must they not have been despair despairing?