The Arabic Alphabet has 28 letters. The shape of these letters changes depending on their position in the word, whether isolated; in the beginning of the word (initial); in the middle (medial); or at the end (final). http://www.sakkal.com/Arab_Calligraphy_Art1.html
Roman numerals, the numeric system used in ancient Rome, employs combinations of letters from the Latin alphabet to signify values. The Roman numeral system is a cousin of Etruscan numerals. Use of Roman numerals continued after the decline of the Roman Empire. From the 14th century on, Roman numerals began to be replaced in most contexts by more convenient Hindu-Arabic numerals.
Language: In this image you can see all of the Farsi letters and all 4 of their forms.There are 32 letters in the Farsi alphabet, but unlike our alphabet each letter is written differently depending on where it is in a sentence.This means if you were to learn to write in Farsi, you would have to memorize 32 letters x 4 forms to know how to write Farsi and that would equal 128 different characters to memorize!