English verb conjugation
MUST PRANK

Regular verb: prank - pranked - pranked

Affirmation

Simple form	V-ing form
I must prank you must prank he must prank we must prank you must prank they must prank	I must be pranking you must be pranking he must be pranking we must be pranking you must be pranking they must be pranking
Perfect	V-ing perfect
I must have pranked you must have pranked he must have pranked we must have pranked you must have pranked they must have pranked	I must have been pranking you must have been pranking he must have been pranking we must have been pranking you must have been pranking they must have been pranking

Negation

Simple form	V-ing form
I mustn't prank you mustn't prank he mustn't prank we mustn't prank you mustn't prank they mustn't prank	I mustn't be pranking you mustn't be pranking he mustn't be pranking we mustn't be pranking you mustn't be pranking they mustn't be pranking
Perfect	V-ing perfect
I mustn't have pranked you mustn't have pranked he mustn't have pranked we mustn't have pranked you mustn't have pranked they mustn't have pranked	I mustn't have been pranking you mustn't have been pranking he mustn't have been pranking we mustn't have been pranking you mustn't have been pranking they mustn't have been pranking

Interrogative form

Simple form	V-ing form
must I prank? must you prank? must he prank? must we prank? must you prank? must they prank?	must I be pranking? must you be pranking? must he be pranking? must we be pranking? must you be pranking? must they be pranking?
Perfect	V-ing perfect
must I have pranked? must you have pranked? must he have pranked? must we have pranked? must you have pranked? must they have pranked?	must I have been pranking? must you have been pranking? must he have been pranking? must we have been pranking? must you have been pranking? must they have been pranking?

Interro-negative form

Simple form	V-ing form
mustn't I prank? mustn't you prank? mustn't he prank? mustn't we prank? mustn't you prank? mustn't they prank?	mustn't I be pranking? mustn't you be pranking? mustn't he be pranking? mustn't we be pranking? mustn't you be pranking? mustn't they be pranking?
Perfect	V-ing perfect
mustn't I have pranked? mustn't you have pranked? mustn't he have pranked? mustn't we have pranked? mustn't you have pranked? mustn't they have pranked?	mustn't I have been pranking? mustn't you have been pranking? mustn't he have been pranking? mustn't we have been pranking? mustn't you have been pranking? mustn't they have been pranking?