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