Unabridged dictionaries of Chinese characters do not include either Japanese 84-stroke "taito" variant. Both Morohashi Tetsuji's Chinese-Japanese "Dai Kan-Wa jiten", which has 49,964 head entries for characters, and the Chinese "Hanyu Da Zidian" (1989), which has 54,678, list the three most graphically complex characters as the 52-stroke Japanese "hō" or "bō" and Chinese "bèng" 䨻 "sound of thunder" (with quadruple 雷 "thunder"; 1960: 12693, 1989 6: 4085), 64-stroke "tetsu" or "techi" and "zhé" 𪚥 "chatter; be garrulous" (with quadruple 龍 "dragon"; 13747, 7: 4806), and 64-stroke "sei" and "zhéng" 𠔻 "meaning unknown" (with quadruple 興 "rise"; 9816, 1: 254)—the first occurrence of the ghost word 𠔻 was in Sima Guang's (1066) "Leipian" dictionary, which gives the pronunciation gloss "zhèng" 政 but no semantic gloss. This character was added to Unicode version 13.0 in March 2020. The character is located at U+3106C (𱁬) in the CJK Unified Ideographs Extension G block in the newly-allocated Tertiary Ideographic Plane. Some extensive encoding systems for Japanese kanji do include "taito" variant character 2. The superseded Mojikyo font, which comprised 142,228 rare and obsolete characters, included it as number [066147]. The deprecated BTRON Business computer architecture TRON project (TRON stands for "The Real-time Operating system Nucleus") also included "taito" [3-7D6B], and it was included in the font under development by the Tokyo University of Foreign Studies's "Jitī shotai" GT書体 project. In December 2015 it was included in document IRGN2107 as one of 1,640 characters submitted to the Ideographic Rapporteur Group for encoding (character source reference UTC-02960). The character was provisionally included in "IRG Working Set 2015", which are candidates for inclusion in a future CJK Unified Ideographs extension.