suchen [und] SGB OA 04-1[0123456789][0123456789][0123456789]* or OA 04-2[0123][0123456789][0123456789]* or OA 04-24[012345678][0123456789]* or OA 04-249[0123456789]* or OA 04-0[123456789][0123456789][0123456789]* or OA 04-00[123456789][0123456789]* or OA 04-000[123456789]*