(A six dot Braille cell. Dot 1, 2, 3, on the left side from top to bottom and dot 4, 5, 6, on the right side from top to bottom)
brailleworks.com/braille-resources/braille-alphabet
A Braille six-dot cell is represented by 3 points high and 2 points wide. Each cell represents a letter, symbol, punctuation, part-contractions or whole contractions.
(Braille Swing cell)
The Swing Cell: Learning the positions of dots in the braille cell helps children discriminate letters and contractions when reading and copy them during writing activities. The open halves of the swing cell, in horizontal positions represent the keys of the braille writer. (Swenson, 1999, pp.49-50).
(Braille swing cell being manipulated by a child)
(Braille swing cell)
(The Perkins Brailler)
(Braille alphabet)
(www.boxentriq.com)
The Braille Alphabet, (included are the numeric representations and a few symbols). A comprehensive reference list of braille can be found by AROGA which includes part and whole contractions as well as punctuation.
https://www.teachingvisuallyimpaired.com/uploads/1/4/1/2/14122361/ueb_braille_chart.pdf