Historically, Latvian proper was written using a system based upon German phonetic principles and latgalian dialect was written using polish orthography principles. At the beginning of the 20th century, this was replaced by a more phonetically appropriate system, using a modified Latin alphabet.
Standard orthography
Today, the Latvian standard alphabet consists of 33 letters:
The modern standard Latvian alphabet uses 22 unmodified letters of the Latin alphabet (all except Q, W, X and Y). It adds a further eleven letters by modification. The vowel letters A, E, I and U can take a macron to show length, unmodified letters being short. The letters C, S and Z, that in unmodified form are pronounced [ts], [s] and [z] respectively, can be marked with a caron. These marked letters, Č, Š and Ž are pronounced [tʃ], [ʃ] and [ʒ] respectively. The letters Ģ, Ķ, Ļ and Ņ are written with a cedilla or little 'comma' placed below (or above the lowercase g). They are modified (palatalized) versions of G, K, L and N and represent the sounds [ɟ], [c], [ʎ] and [ɲ]. Non-standard varieties of Latvian add extra letters to this standard set.
Latvian spelling has almost perfect correspondence between graphemes and phonemes. Every phoneme has its own letter so that a reader need not learn how a word is pronounced, but simply pronounce it. There are only three exceptions to this that could cause mispronunciation. The first is the letter E and its long variation Ē, which are used to write two sounds that represent the short and long versions of either [ɛ] or [æ] respectively. The letter O indicates both the short and long [ɔ], and the diphthong [uɔ]. These three sounds are written as O, Ō and Uo in Latgalian, and some Latvians campaign for the adoption of this system in standard Latvian. However, the majority of Latvian linguists argue that o and ō are found only in loanwords, with the Uo sound being the only native Latvian phoneme. The digraph Uo was discarded in