English verb conjugation
MUST SWAN-DIVE

Irregular verb: swan-dive - swan-dived, swan-dove - swan-dived

Affirmation

Simple form	V-ing form
I must swan-dive you must swan-dive he must swan-dive we must swan-dive you must swan-dive they must swan-dive	I must be swan-diving you must be swan-diving he must be swan-diving we must be swan-diving you must be swan-diving they must be swan-diving
Perfect	V-ing perfect
I must have swan-dived you must have swan-dived he must have swan-dived we must have swan-dived you must have swan-dived they must have swan-dived	I must have been swan-diving you must have been swan-diving he must have been swan-diving we must have been swan-diving you must have been swan-diving they must have been swan-diving

Negation

Simple form	V-ing form
I mustn't swan-dive you mustn't swan-dive he mustn't swan-dive we mustn't swan-dive you mustn't swan-dive they mustn't swan-dive	I mustn't be swan-diving you mustn't be swan-diving he mustn't be swan-diving we mustn't be swan-diving you mustn't be swan-diving they mustn't be swan-diving
Perfect	V-ing perfect
I mustn't have swan-dived you mustn't have swan-dived he mustn't have swan-dived we mustn't have swan-dived you mustn't have swan-dived they mustn't have swan-dived	I mustn't have been swan-diving you mustn't have been swan-diving he mustn't have been swan-diving we mustn't have been swan-diving you mustn't have been swan-diving they mustn't have been swan-diving

Interrogative form

Simple form	V-ing form
must I swan-dive? must you swan-dive? must he swan-dive? must we swan-dive? must you swan-dive? must they swan-dive?	must I be swan-diving? must you be swan-diving? must he be swan-diving? must we be swan-diving? must you be swan-diving? must they be swan-diving?
Perfect	V-ing perfect
must I have swan-dived? must you have swan-dived? must he have swan-dived? must we have swan-dived? must you have swan-dived? must they have swan-dived?	must I have been swan-diving? must you have been swan-diving? must he have been swan-diving? must we have been swan-diving? must you have been swan-diving? must they have been swan-diving?

Interro-negative form

Simple form	V-ing form
mustn't I swan-dive? mustn't you swan-dive? mustn't he swan-dive? mustn't we swan-dive? mustn't you swan-dive? mustn't they swan-dive?	mustn't I be swan-diving? mustn't you be swan-diving? mustn't he be swan-diving? mustn't we be swan-diving? mustn't you be swan-diving? mustn't they be swan-diving?
Perfect	V-ing perfect
mustn't I have swan-dived? mustn't you have swan-dived? mustn't he have swan-dived? mustn't we have swan-dived? mustn't you have swan-dived? mustn't they have swan-dived?	mustn't I have been swan-diving? mustn't you have been swan-diving? mustn't he have been swan-diving? mustn't we have been swan-diving? mustn't you have been swan-diving? mustn't they have been swan-diving?