English verb conjugation
MUST ULULATE

Regular verb: ululate - ululated - ululated

Affirmation

Simple form	V-ing form
I must ululate you must ululate he must ululate we must ululate you must ululate they must ululate	I must be ululating you must be ululating he must be ululating we must be ululating you must be ululating they must be ululating
Perfect	V-ing perfect
I must have ululated you must have ululated he must have ululated we must have ululated you must have ululated they must have ululated	I must have been ululating you must have been ululating he must have been ululating we must have been ululating you must have been ululating they must have been ululating

Negation

Simple form	V-ing form
I mustn't ululate you mustn't ululate he mustn't ululate we mustn't ululate you mustn't ululate they mustn't ululate	I mustn't be ululating you mustn't be ululating he mustn't be ululating we mustn't be ululating you mustn't be ululating they mustn't be ululating
Perfect	V-ing perfect
I mustn't have ululated you mustn't have ululated he mustn't have ululated we mustn't have ululated you mustn't have ululated they mustn't have ululated	I mustn't have been ululating you mustn't have been ululating he mustn't have been ululating we mustn't have been ululating you mustn't have been ululating they mustn't have been ululating

Interrogative form

Simple form	V-ing form
must I ululate? must you ululate? must he ululate? must we ululate? must you ululate? must they ululate?	must I be ululating? must you be ululating? must he be ululating? must we be ululating? must you be ululating? must they be ululating?
Perfect	V-ing perfect
must I have ululated? must you have ululated? must he have ululated? must we have ululated? must you have ululated? must they have ululated?	must I have been ululating? must you have been ululating? must he have been ululating? must we have been ululating? must you have been ululating? must they have been ululating?

Interro-negative form

Simple form	V-ing form
mustn't I ululate? mustn't you ululate? mustn't he ululate? mustn't we ululate? mustn't you ululate? mustn't they ululate?	mustn't I be ululating? mustn't you be ululating? mustn't he be ululating? mustn't we be ululating? mustn't you be ululating? mustn't they be ululating?
Perfect	V-ing perfect
mustn't I have ululated? mustn't you have ululated? mustn't he have ululated? mustn't we have ululated? mustn't you have ululated? mustn't they have ululated?	mustn't I have been ululating? mustn't you have been ululating? mustn't he have been ululating? mustn't we have been ululating? mustn't you have been ululating? mustn't they have been ululating?