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