English verb conjugation
MUST CUP

Regular verb: cup - cupped - cupped

Affirmation

Simple form	V-ing form
I must cup you must cup he must cup we must cup you must cup they must cup	I must be cupping you must be cupping he must be cupping we must be cupping you must be cupping they must be cupping
Perfect	V-ing perfect
I must have cupped you must have cupped he must have cupped we must have cupped you must have cupped they must have cupped	I must have been cupping you must have been cupping he must have been cupping we must have been cupping you must have been cupping they must have been cupping

Negation

Simple form	V-ing form
I mustn't cup you mustn't cup he mustn't cup we mustn't cup you mustn't cup they mustn't cup	I mustn't be cupping you mustn't be cupping he mustn't be cupping we mustn't be cupping you mustn't be cupping they mustn't be cupping
Perfect	V-ing perfect
I mustn't have cupped you mustn't have cupped he mustn't have cupped we mustn't have cupped you mustn't have cupped they mustn't have cupped	I mustn't have been cupping you mustn't have been cupping he mustn't have been cupping we mustn't have been cupping you mustn't have been cupping they mustn't have been cupping

Interrogative form

Simple form	V-ing form
must I cup? must you cup? must he cup? must we cup? must you cup? must they cup?	must I be cupping? must you be cupping? must he be cupping? must we be cupping? must you be cupping? must they be cupping?
Perfect	V-ing perfect
must I have cupped? must you have cupped? must he have cupped? must we have cupped? must you have cupped? must they have cupped?	must I have been cupping? must you have been cupping? must he have been cupping? must we have been cupping? must you have been cupping? must they have been cupping?

Interro-negative form

Simple form	V-ing form
mustn't I cup? mustn't you cup? mustn't he cup? mustn't we cup? mustn't you cup? mustn't they cup?	mustn't I be cupping? mustn't you be cupping? mustn't he be cupping? mustn't we be cupping? mustn't you be cupping? mustn't they be cupping?
Perfect	V-ing perfect
mustn't I have cupped? mustn't you have cupped? mustn't he have cupped? mustn't we have cupped? mustn't you have cupped? mustn't they have cupped?	mustn't I have been cupping? mustn't you have been cupping? mustn't he have been cupping? mustn't we have been cupping? mustn't you have been cupping? mustn't they have been cupping?