English verb conjugation
MUST APPRECIATE

Regular verb: appreciate - appreciated - appreciated

Affirmation

Simple form	V-ing form
I must appreciate you must appreciate she must appreciate we must appreciate you must appreciate they must appreciate	I must be appreciating you must be appreciating she must be appreciating we must be appreciating you must be appreciating they must be appreciating
Perfect	V-ing perfect
I must have appreciated you must have appreciated she must have appreciated we must have appreciated you must have appreciated they must have appreciated	I must have been appreciating you must have been appreciating she must have been appreciating we must have been appreciating you must have been appreciating they must have been appreciating

Negation

Simple form	V-ing form
I mustn't appreciate you mustn't appreciate she mustn't appreciate we mustn't appreciate you mustn't appreciate they mustn't appreciate	I mustn't be appreciating you mustn't be appreciating she mustn't be appreciating we mustn't be appreciating you mustn't be appreciating they mustn't be appreciating
Perfect	V-ing perfect
I mustn't have appreciated you mustn't have appreciated she mustn't have appreciated we mustn't have appreciated you mustn't have appreciated they mustn't have appreciated	I mustn't have been appreciating you mustn't have been appreciating she mustn't have been appreciating we mustn't have been appreciating you mustn't have been appreciating they mustn't have been appreciating

Interrogative form

Simple form	V-ing form
must I appreciate? must you appreciate? must she appreciate? must we appreciate? must you appreciate? must they appreciate?	must I be appreciating? must you be appreciating? must she be appreciating? must we be appreciating? must you be appreciating? must they be appreciating?
Perfect	V-ing perfect
must I have appreciated? must you have appreciated? must she have appreciated? must we have appreciated? must you have appreciated? must they have appreciated?	must I have been appreciating? must you have been appreciating? must she have been appreciating? must we have been appreciating? must you have been appreciating? must they have been appreciating?

Interro-negative form

Simple form	V-ing form
mustn't I appreciate? mustn't you appreciate? mustn't she appreciate? mustn't we appreciate? mustn't you appreciate? mustn't they appreciate?	mustn't I be appreciating? mustn't you be appreciating? mustn't she be appreciating? mustn't we be appreciating? mustn't you be appreciating? mustn't they be appreciating?
Perfect	V-ing perfect
mustn't I have appreciated? mustn't you have appreciated? mustn't she have appreciated? mustn't we have appreciated? mustn't you have appreciated? mustn't they have appreciated?	mustn't I have been appreciating? mustn't you have been appreciating? mustn't she have been appreciating? mustn't we have been appreciating? mustn't you have been appreciating? mustn't they have been appreciating?