Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I can lack lack you can lack lack she can lack lack we can lack lack you can lack lack they can lack lack
V-ing form
I can be lack lacking you can be lack lacking she can be lack lacking we can be lack lacking you can be lack lacking they can be lack lacking
Perfect
I can have lack lacked you can have lack lacked she can have lack lacked we can have lack lacked you can have lack lacked they can have lack lacked
V-ing perfect
I can have been lack lacking you can have been lack lacking she can have been lack lacking we can have been lack lacking you can have been lack lacking they can have been lack lacking
Negation
Simple form
I cannot lack lack you cannot lack lack she cannot lack lack we cannot lack lack you cannot lack lack they cannot lack lack
V-ing form
I cannot be lack lacking you cannot be lack lacking she cannot be lack lacking we cannot be lack lacking you cannot be lack lacking they cannot be lack lacking
Perfect
I cannot have lack lacked you cannot have lack lacked she cannot have lack lacked we cannot have lack lacked you cannot have lack lacked they cannot have lack lacked
V-ing perfect
I cannot have been lack lacking you cannot have been lack lacking she cannot have been lack lacking we cannot have been lack lacking you cannot have been lack lacking they cannot have been lack lacking
Interrogative form
Simple form
can I lack lack? can you lack lack? can she lack lack? can we lack lack? can you lack lack? can they lack lack?
V-ing form
can I be lack lacking? can you be lack lacking? can she be lack lacking? can we be lack lacking? can you be lack lacking? can they be lack lacking?
Perfect
can I have lack lacked? can you have lack lacked? can she have lack lacked? can we have lack lacked? can you have lack lacked? can they have lack lacked?
V-ing perfect
can I have been lack lacking? can you have been lack lacking? can she have been lack lacking? can we have been lack lacking? can you have been lack lacking? can they have been lack lacking?
Interro-negative form
Simple form
can I not lack lack? can you not lack lack? can she not lack lack? can we not lack lack? can you not lack lack? can they not lack lack?
V-ing form
can I not be lack lacking? can you not be lack lacking? can she not be lack lacking? can we not be lack lacking? can you not be lack lacking? can they not be lack lacking?
Perfect
can I not have lack lacked? can you not have lack lacked? can she not have lack lacked? can we not have lack lacked? can you not have lack lacked? can they not have lack lacked?
V-ing perfect
can I not have been lack lacking? can you not have been lack lacking? can she not have been lack lacking? can we not have been lack lacking? can you not have been lack lacking? can they not have been lack lacking?