Like Devanagari, Eastern Nagari also uses dozens of consonant clusters. They are represented by different and sometimes quite irregular characters. Thus, learning to read the script is complicated by the large size of the full set of characters and character combinations, numbering about 500. While efforts at standardizing the script for the Bengali language continue in such notable centers as the Bangla Academy in Dhaka (Bangladesh) and Paschimbanga Bangla Akademi in Kolkata (West Bengal, India), there isn't a uniform spelling for Bengali, as many people continue to use various archaic forms of letters. Among the various regional variations within this script, only the Bengali and Assamese variations exist today in the formalized system.