In the early part of the 19th century, Atmaram Sarmah designed the first Assamese script for printing in Serampore, and the Bengali and Assamese lithography converged to the present standard that is used today. Assamese symbols Vowels The script presently has a total of 11 vowel letters, used to represent the eight main vowel sounds of Assamese, along with a number of vowel diphthongs. All of these are used in both Assamese and Bengali, the two main languages using the script. In addition to the vowel system in the Bengali alphabet the Assamese alphabet has an additional "matra" (ʼ) that is used to represent the phonemes and . Some of the vowel letters have different sounds depending on the word, and a number of vowel distinctions preserved in the writing system are not pronounced as such in modern spoken Assamese or Bengali. For example, the Assamese script has two symbols for the vowel sound and two symbols for the vowel sound . This redundancy stems from the time when this script was used to write Sanskrit, a language that had a short and a long , and a short and a long . These letters are preserved in the Assamese script with their traditional names of hôrswô i (lit. 'short i') and dirghô i (lit. 'long i'), etc., despite the fact that they are no longer pronounced differently in ordinary speech. Vowel signs can be used in conjunction with consonants to modify the pronunciation of the consonant (here exemplified by , kô). When no vowel is written, the vowel (ô or o) is often assumed. To specifically denote the absence of a vowel, () may be written underneath the consonant. Consonants The names of the consonant letters in Assamese are typically just the consonant's main pronunciation plus the inherent vowel ô. Since the inherent vowel is assumed and not written, most letters' names look identical to the letter itself (e.g. the name of the letter is itself ghô). Some letters that have lost their distinctive pronunciation in Modern Assamese are called by a more elaborate name. For example, since the consonant phoneme /n/ can be written , , or (depending on the spelling of the particular word), these letters are not simply called no; instead, they are called dontiya no ("dental n"), murdhoinno no ("retroflex n"), and nio. Similarly, the phoneme can be written as taloibbo xo ("palatal x"), murdhoinno