It would be the first (like 'I'), second (as 'you') and third (such as 'he/she') people in singular imperfect indicative mode for a garatear verb, which does not exist in Spanish but could be used from garata ( "fight") or garatura ( "knife to peel wool") . It can also be a verb/scribble error or verbs/gareteaba .
GARATEABA spelling error by GARABATEABA , of GARABATEAR , make strokes to create simple drawings, say improper; or GARETEABA, GARETEAR, let a boat be carried by the current