English verb conjugation
CAN LICHEN

Regular verb: lichen - lichened - lichened

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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