English verb conjugation
MUST SCUBA-DIVE

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

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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