3. Grupul de litere incepe cu:

IS-82-A??IS-82-B??IS-82-C??IS-82-D??IS-82-E??IS-82-F??IS-82-G??IS-82-H??IS-82-I??
IS-82-J??IS-82-K??IS-82-L??IS-82-M??IS-82-N??IS-82-O??IS-82-P??IS-82-Q??IS-82-R??
IS-82-S??IS-82-T??IS-82-U??IS-82-V??IS-82-W??IS-82-X??IS-82-Y??IS-82-Z??