3. Grupul de litere incepe cu:

SM-23-A??SM-23-B??SM-23-C??SM-23-D??SM-23-E??SM-23-F??SM-23-G??SM-23-H??SM-23-I??
SM-23-J??SM-23-K??SM-23-L??SM-23-M??SM-23-N??SM-23-O??SM-23-P??SM-23-Q??SM-23-R??
SM-23-S??SM-23-T??SM-23-U??SM-23-V??SM-23-W??SM-23-X??SM-23-Y??SM-23-Z??