Unified Ideographs is defined. [ 21 ] 1.1 June 1993 ISO/IEC 10646-1:1993 24 34,233 4,306 more Hangul syllables added to original set of 2,350 characters. Tibetan removed. [ 22 ] 2.0 July 1996 ISBN 0-201-48345-9 ISO/IEC 10646-1:1993 plus Amendments 5, 6 and 7 25 38,950 Original set of Hangul syllables removed,