<prompt> In Forrest classification visible clot at ulcer base is1A2A2B3  <response>: FORREST - Classification of upper gastrointestinal hemorrhageAcute hemorrhageForrest IA - Active spurting hemorrhageForrest IB - Oozing hemorrhageSigns of recent hemorrhageForrest IIA - Non-bleeding visible vesselForrest IIB - Adherent clotForrest IIC - Hematin on ulcer baseLesions without active bleedingForrest III - Clean-base ulcers. 