suchen [und] SGB KA 27-1[0123456789][0123456789][0123456789]* or KA 27-2[012345678][0123456789][0123456789]* or KA 27-29[012345678][0123456789]* or KA 27-299[0123456789]* or KA 27-0[123456789][0123456789][0123456789]* or KA 27-00[123456789][0123456789]* or KA 27-000[123456789]*