Braille pattern dots-1346

The Braille pattern dots-1346 ( ) is a 6-dot braille cell with both top and both bottom dots raised, or an 8-dot braille cell with both top and both lower-middle dots raised. It is represented by the Unicode code point U+282d, and in Braille ASCII with an X.
Unified Braille.
In unified international braille, the braille pattern dots-1346 is used to represent a voiceless velar fricative, i.e. /x/, or otherwise as needed.
Plus dots 7 and 8.
Related to Braille pattern dots-1346 are Braille patterns 13467, 13468, and 134678, 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 2578, 12578, 24578, and 124578 are the patterns related to Braille pattern dots-1346, since the two additional dots of kantenji patterns 01346, 13467, and 013467 are placed above the base 6-dot cell, instead of below, as in standard 8-dot braille.
Kantenji using braille patterns 2578, 12578, 24578, or 124578.
This listing includes kantenji using Braille pattern dots-1346 for all 6349 kanji found in JIS C 6226-1978.