Braille pattern dots-25

The Braille pattern dots-25 ( ) is a 6-dot braille cell with both middle dots raised, or an 8-dot braille cell with both upper-middle dots raised. It is represented by the Unicode code point U+2812, and in Braille ASCII with the number 3.
Unified Braille.
In unified international braille, the braille pattern dots-25 is used to represent a colon or other punctuation or mathematical operators.
Plus dots 7 and 8.
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.
related 8-dot kantenji patterns.
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.
Kantenji using braille patterns 36, 136, 346, or 1346.
This listing includes kantenji using Braille pattern dots-25 for all 6349 kanji found in JIS C 6226-1978.
Non-compounding.
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.