The Braille pattern dots-124 ( ⠋ ) is a 6-dot braille cell with the two top dots and middle left dot raised, or an 8-dot braille cell with both top dots and the upper-middle left dot raised.
It is represented by the Unicode code point U+280b, and in Braille ASCII with F. In unified international braille, the braille pattern dots-124 is used to represent unvoiced labial fricatives, such as /f/ and /ɸ/, and is otherwise assigned as needed.
[1] [1] Related to Braille pattern dots-124 are Braille patterns 1247, 1248, and 12478, which are used in 8-dot braille systems, such as Gardner-Salinas and Luxembourgish Braille.
In the Japanese kantenji braille, the standard 8-dot Braille patterns 235, 1235, 2345, and 12345 are the patterns related to Braille pattern dots-124, since the two additional dots of kantenji patterns 0124, 1247, and 01247 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-124 for all 6349 kanji found in JIS C 6226-1978.