suchen [und] SGB \AN 57-1[0123456789][0123456789][0123456789]* or \AN 57-2[012345678][0123456789][0123456789]* or \AN 57-29[012345678][0123456789]* or \AN 57-299[0123456789]* or \AN 57-0[123456789][0123456789][0123456789]* or \AN 57-00[123456789][0123456789]* or \AN 57-000[123456789]*