English verb conjugation
MUST INSTRUMENT

Regular verb: instrument - instrumented - instrumented

Affirmation

Simple form	V-ing form
I must instrument you must instrument he must instrument we must instrument you must instrument they must instrument	I must be instrumenting you must be instrumenting he must be instrumenting we must be instrumenting you must be instrumenting they must be instrumenting
Perfect	V-ing perfect
I must have instrumented you must have instrumented he must have instrumented we must have instrumented you must have instrumented they must have instrumented	I must have been instrumenting you must have been instrumenting he must have been instrumenting we must have been instrumenting you must have been instrumenting they must have been instrumenting

Negation

Simple form	V-ing form
I mustn't instrument you mustn't instrument he mustn't instrument we mustn't instrument you mustn't instrument they mustn't instrument	I mustn't be instrumenting you mustn't be instrumenting he mustn't be instrumenting we mustn't be instrumenting you mustn't be instrumenting they mustn't be instrumenting
Perfect	V-ing perfect
I mustn't have instrumented you mustn't have instrumented he mustn't have instrumented we mustn't have instrumented you mustn't have instrumented they mustn't have instrumented	I mustn't have been instrumenting you mustn't have been instrumenting he mustn't have been instrumenting we mustn't have been instrumenting you mustn't have been instrumenting they mustn't have been instrumenting

Interrogative form

Simple form	V-ing form
must I instrument? must you instrument? must he instrument? must we instrument? must you instrument? must they instrument?	must I be instrumenting? must you be instrumenting? must he be instrumenting? must we be instrumenting? must you be instrumenting? must they be instrumenting?
Perfect	V-ing perfect
must I have instrumented? must you have instrumented? must he have instrumented? must we have instrumented? must you have instrumented? must they have instrumented?	must I have been instrumenting? must you have been instrumenting? must he have been instrumenting? must we have been instrumenting? must you have been instrumenting? must they have been instrumenting?

Interro-negative form

Simple form	V-ing form
mustn't I instrument? mustn't you instrument? mustn't he instrument? mustn't we instrument? mustn't you instrument? mustn't they instrument?	mustn't I be instrumenting? mustn't you be instrumenting? mustn't he be instrumenting? mustn't we be instrumenting? mustn't you be instrumenting? mustn't they be instrumenting?
Perfect	V-ing perfect
mustn't I have instrumented? mustn't you have instrumented? mustn't he have instrumented? mustn't we have instrumented? mustn't you have instrumented? mustn't they have instrumented?	mustn't I have been instrumenting? mustn't you have been instrumenting? mustn't he have been instrumenting? mustn't we have been instrumenting? mustn't you have been instrumenting? mustn't they have been instrumenting?