D2O1
3 points
DO is validvalid
the first tone of the diatonic musical scale [n DOS] / to begin and carry through to completion [v DID, DIDST, DOES, DOEST, DOETH, DOING, DONE, DOST, DOTH]
a party, celebration [n -S] / to perform [v DID or DIDST, DONE or DOEN, DOING, DO or DOEST or DOST, DOES or DOETH or DOTH]