Old Permic alphabet by usual writing. The inclusion of the latter aided the alphabet in greater acceptance among the medieval Permic speakers of the time. The alphabet was in use until the 17th century, when it was superseded by the Cyrillic script. Abur was also used as cryptographic writing for the Russian language. April 26, which is the saint's day of Stephen of Perm, is celebrated as Old Permic Alphabet Day. The Abur inscriptions are among the oldest relics of the Uralic languages. Only one of them has earlier documents: Hungarian, which had been written using the Old Hungarian script first before the
Tamil script which is substantially similar to the writing system described in the "Tolkāppiyam", an ancient Tamil grammar. Most notably, they used the "puḷḷi" to suppress the inherent vowel. The Tamil letters thereafter evolved towards a more rounded form, and by the 5th or 6th century, they had reached a form called the "early vaṭṭeḻuttu". The modern Tamil script does not, however, descend from that script. In the 6th century, the Pallava dynasty created a new script for Tamil, and the Grantha alphabet evolved from it, adding the Vaṭṭeḻuttu alphabet for sounds not found to write Sanskrit. Parallel to Pallava script a