In unified international braille, the braille pattern dots-25 is used to represent a colon or other punctuation or mathematical operators.1
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Related to Braille pattern dots-25 are Braille patterns 257, 258, and 2578, which are used in 8-dot braille systems, such as Gardner-Salinas and Luxembourgish Braille.
See also: Braille pattern dots-36, Braille pattern dots-136, Braille pattern dots-346, and Braille pattern dots-1346
In the Japanese kantenji braille, the standard 8-dot Braille patterns 36, 136, 346, and 1346 are the patterns related to Braille pattern dots-25, since the two additional dots of kantenji patterns 025, 257, and 0257 are placed above the base 6-dot cell, instead of below, as in standard 8-dot braille.
This listing includes kantenji using Braille pattern dots-25 for all 6349 kanji found in JIS C 6226-1978.
For many kantenji, a middle cell of ⠤ serves only to distinguish between two-cell patterns that could be interpreted in multiple ways, e.g. ⢱⡎ = 淫, while ⢱⠤⡎ = 冰.
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