δεῖ:

δεῖ;δεῖact ind pres 3rd sg
δέωact ind pres 3rd sg; act imperat pres 2nd sg; mid-pass ind pres 2nd sg
δέω;δῶact ind pres 3rd sg; act ind imperf 3rd sg; act imperat pres 2nd sg; mid-pass ind pres 2nd sg