ocr: ABAB 4 CI A B C - D Available Input string Character Set Character Code HHCHD 'A after first pass 'B' 'C' 1 2 Buifer contents 'D' 3 HGGD E' 4 'F Bulfer contents after second pass 'G 'H' / A A 1 B - B 1 - L 1 DI L 1 E - E U - F U G H C HI - A - leftcode rightcode Pair table after compression 133H - C1 A B 0 4 H - GGD Encoded Compressed Compressed pair table buffer size buffer