Schritte 4	Loesungen
audio 1	audio 2	audio 3	audio4	audio5
audio6	audio7	audio8	audio9	audio10
audio11	audio12	audio13	audio14	audio15
audio16	audio17	audio18	audio19	audio20
audio21	audio22	audio23	audio24	audio25
audio26	audio27	audio28	audio29	audio30
audio31	audio32	audio33	audio34	audio35
audio36	audio37	audio38	audio39	audio40
audio41	audio42	audio43	audio44	audio45
audio46	audio47	audio48	audio49	audio50
audio51	audio52	audio53	audio54	audio55