亖 (radical 7, 二+2, 4 strokes, cangjie input 一一一一 (MMMM), four-corner 10101, composition ⿱二二)
A glyph of 四, which is 一 written four times (compare 二 and 三); firstly appeared in oracle bone script and commonly used before Qin Dynasty. Obsolete during writing system standardization in Qin Dynasty.
(uncommon “Hyōgai” kanji)
Non-standard for 四