sejak the time of the Late Roman Republic (i.e. in the 1st c. BC) the Latin alphabet consisted of 23 letters.

A short personality test.

Quick personality test. ;)

Quick personality test. ;)

A quick personality test. :)

Korean alphabet - Hangul system alphabet, Greek Alphabet, There are 24 letters.

Morse Code signs

A senarai of Japanese syllables: Hiragana system syllables and Katakana system syllables

A senarai of Cyryllic system alphabets

A senarai of Latin system alphabets.