Below is a table from which compares the different romanizations of Standard Mandarin. This table includes a list of all syllables which are considered distinguishable within the language.
Note that Zhuyin has been included. While not being a form of the Latin alphabet, it still functions like a romanization system in modern use. Also note that Gwoyeu Romatzyh has a different spelling for each tone—this follows the of modifying the syllable's letters in order to indicate tone.