English verb conjugation
MUST TOOL

Regular verb: tool - tooled - tooled

Affirmation

Simple form	V-ing form
I must tool you must tool he must tool we must tool you must tool they must tool	I must be tooling you must be tooling he must be tooling we must be tooling you must be tooling they must be tooling
Perfect	V-ing perfect
I must have tooled you must have tooled he must have tooled we must have tooled you must have tooled they must have tooled	I must have been tooling you must have been tooling he must have been tooling we must have been tooling you must have been tooling they must have been tooling

Negation

Simple form	V-ing form
I mustn't tool you mustn't tool he mustn't tool we mustn't tool you mustn't tool they mustn't tool	I mustn't be tooling you mustn't be tooling he mustn't be tooling we mustn't be tooling you mustn't be tooling they mustn't be tooling
Perfect	V-ing perfect
I mustn't have tooled you mustn't have tooled he mustn't have tooled we mustn't have tooled you mustn't have tooled they mustn't have tooled	I mustn't have been tooling you mustn't have been tooling he mustn't have been tooling we mustn't have been tooling you mustn't have been tooling they mustn't have been tooling

Interrogative form

Simple form	V-ing form
must I tool? must you tool? must he tool? must we tool? must you tool? must they tool?	must I be tooling? must you be tooling? must he be tooling? must we be tooling? must you be tooling? must they be tooling?
Perfect	V-ing perfect
must I have tooled? must you have tooled? must he have tooled? must we have tooled? must you have tooled? must they have tooled?	must I have been tooling? must you have been tooling? must he have been tooling? must we have been tooling? must you have been tooling? must they have been tooling?

Interro-negative form

Simple form	V-ing form
mustn't I tool? mustn't you tool? mustn't he tool? mustn't we tool? mustn't you tool? mustn't they tool?	mustn't I be tooling? mustn't you be tooling? mustn't he be tooling? mustn't we be tooling? mustn't you be tooling? mustn't they be tooling?
Perfect	V-ing perfect
mustn't I have tooled? mustn't you have tooled? mustn't he have tooled? mustn't we have tooled? mustn't you have tooled? mustn't they have tooled?	mustn't I have been tooling? mustn't you have been tooling? mustn't he have been tooling? mustn't we have been tooling? mustn't you have been tooling? mustn't they have been tooling?