English verb conjugation
MUST PRANK

Regular verb: prank - pranked - pranked

Affirmation

Simple form	V-ing form
I must prank you must prank she must prank we must prank you must prank they must prank	I must be pranking you must be pranking she 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 she 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 she 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 she 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 she 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 she 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 she 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 she prank? must we prank? must you prank? must they prank?	must I be pranking? must you be pranking? must she 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 she 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 she 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 she 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 she 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 she 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 she have been pranking? mustn't we have been pranking? mustn't you have been pranking? mustn't they have been pranking?