Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may lengthen lengthen you may lengthen lengthen he may lengthen lengthen we may lengthen lengthen you may lengthen lengthen they may lengthen lengthen
V-ing form
I may be lengthen lengthening you may be lengthen lengthening he may be lengthen lengthening we may be lengthen lengthening you may be lengthen lengthening they may be lengthen lengthening
Perfect
I may have lengthen lengthened you may have lengthen lengthened he may have lengthen lengthened we may have lengthen lengthened you may have lengthen lengthened they may have lengthen lengthened
V-ing perfect
I may have been lengthen lengthening you may have been lengthen lengthening he may have been lengthen lengthening we may have been lengthen lengthening you may have been lengthen lengthening they may have been lengthen lengthening
Negation
Simple form
I may not lengthen lengthen you may not lengthen lengthen he may not lengthen lengthen we may not lengthen lengthen you may not lengthen lengthen they may not lengthen lengthen
V-ing form
I may not be lengthen lengthening you may not be lengthen lengthening he may not be lengthen lengthening we may not be lengthen lengthening you may not be lengthen lengthening they may not be lengthen lengthening
Perfect
I may not have lengthen lengthened you may not have lengthen lengthened he may not have lengthen lengthened we may not have lengthen lengthened you may not have lengthen lengthened they may not have lengthen lengthened
V-ing perfect
I may not have been lengthen lengthening you may not have been lengthen lengthening he may not have been lengthen lengthening we may not have been lengthen lengthening you may not have been lengthen lengthening they may not have been lengthen lengthening
Interrogative form
Simple form
may I lengthen lengthen? may you lengthen lengthen? may he lengthen lengthen? may we lengthen lengthen? may you lengthen lengthen? may they lengthen lengthen?
V-ing form
may I be lengthen lengthening? may you be lengthen lengthening? may he be lengthen lengthening? may we be lengthen lengthening? may you be lengthen lengthening? may they be lengthen lengthening?
Perfect
may I have lengthen lengthened? may you have lengthen lengthened? may he have lengthen lengthened? may we have lengthen lengthened? may you have lengthen lengthened? may they have lengthen lengthened?
V-ing perfect
may I have been lengthen lengthening? may you have been lengthen lengthening? may he have been lengthen lengthening? may we have been lengthen lengthening? may you have been lengthen lengthening? may they have been lengthen lengthening?
Interro-negative form
Simple form
may I not lengthen lengthen? may you not lengthen lengthen? may he not lengthen lengthen? may we not lengthen lengthen? may you not lengthen lengthen? may they not lengthen lengthen?
V-ing form
may I not be lengthen lengthening? may you not be lengthen lengthening? may he not be lengthen lengthening? may we not be lengthen lengthening? may you not be lengthen lengthening? may they not be lengthen lengthening?
Perfect
may I not have lengthen lengthened? may you not have lengthen lengthened? may he not have lengthen lengthened? may we not have lengthen lengthened? may you not have lengthen lengthened? may they not have lengthen lengthened?
V-ing perfect
may I not have been lengthen lengthening? may you not have been lengthen lengthening? may he not have been lengthen lengthening? may we not have been lengthen lengthening? may you not have been lengthen lengthening? may they not have been lengthen lengthening?