English verb conjugation
MUST LICHEN

Regular verb: lichen - lichened - lichened

Affirmation

Simple form	V-ing form
I must lichen you must lichen he must lichen we must lichen you must lichen they must lichen	I must be lichening you must be lichening he must be lichening we must be lichening you must be lichening they must be lichening
Perfect	V-ing perfect
I must have lichened you must have lichened he must have lichened we must have lichened you must have lichened they must have lichened	I must have been lichening you must have been lichening he must have been lichening we must have been lichening you must have been lichening they must have been lichening

Negation

Simple form	V-ing form
I must not lichen you must not lichen he must not lichen we must not lichen you must not lichen they must not lichen	I must not be lichening you must not be lichening he must not be lichening we must not be lichening you must not be lichening they must not be lichening
Perfect	V-ing perfect
I must not have lichened you must not have lichened he must not have lichened we must not have lichened you must not have lichened they must not have lichened	I must not have been lichening you must not have been lichening he must not have been lichening we must not have been lichening you must not have been lichening they must not have been lichening

Interrogative form

Simple form	V-ing form
must I lichen? must you lichen? must he lichen? must we lichen? must you lichen? must they lichen?	must I be lichening? must you be lichening? must he be lichening? must we be lichening? must you be lichening? must they be lichening?
Perfect	V-ing perfect
must I have lichened? must you have lichened? must he have lichened? must we have lichened? must you have lichened? must they have lichened?	must I have been lichening? must you have been lichening? must he have been lichening? must we have been lichening? must you have been lichening? must they have been lichening?

Interro-negative form

Simple form	V-ing form
must I not lichen? must you not lichen? must he not lichen? must we not lichen? must you not lichen? must they not lichen?	must I not be lichening? must you not be lichening? must he not be lichening? must we not be lichening? must you not be lichening? must they not be lichening?
Perfect	V-ing perfect
must I not have lichened? must you not have lichened? must he not have lichened? must we not have lichened? must you not have lichened? must they not have lichened?	must I not have been lichening? must you not have been lichening? must he not have been lichening? must we not have been lichening? must you not have been lichening? must they not have been lichening?