PPK, VPK, APK, AIK, MBD
ADHD, BBC, PDB, MP3
MDB, EXE, PHP, DVD, CDR
SNMP, POP, PAP, OCR

ELT, BAT, ECC, DDT, PRO
HTML, ATX, TXT, GPO
XLS, WHO, PLO, ADO, ITV
RFSL, HIV, TV3, SVT

DOC, DAC, AGP, CTC, VHS
IOGT, SMS, PMS, MMS
TTL, VLB, XML, BOC, CGA
SMTP, PGP, LTO, VGA

EGA, DLT, DAT, TCO, PCP
MTBF, TOC, WMI, ADB
WRC, FIS, GNU, MOM, SUS
UMTS, SAP, NAP, OSS

WTO, DOA, OSA, GTA, COD
OECD, UHF, VHF, CDV
MFF, PPT, PDF, CSV, NTO
UCLA, SDSOSIA, OAO