Braille pattern dots-1456

The Braille pattern dots-1456 ( ) is a 6-dot braille cell with both top, the middle right, and bottom right dots raised, or an 8-dot braille cell with both top, the upper-middle right, and lower-middle right dots raised. It is represented by the Unicode code point U+2839, and in Braille ASCII with a question mark: ?.
Unified Braille.
In unified international braille, the braille pattern dots-1456 is used to represent a voiceless dental fricative, i.e. /θ/, and is otherwise assigned as needed.
Plus dots 7 and 8.
Related to Braille pattern dots-1456 are Braille patterns 14567, 14568, and 145678, 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 2568, 12568, 24568, and 124568 are the patterns related to Braille pattern dots-1456, since the two additional dots of kantenji patterns 01456, 14567, and 014567 are placed above the base 6-dot cell, instead of below, as in standard 8-dot braille.
Kantenji using braille patterns 2568, 12568, 24568, or 124568.
This listing includes kantenji using Braille pattern dots-1456 for all 6349 kanji found in JIS C 6226-1978.