In addition to the industry standard QWERTY and 12 key layouts, Google Japanese Input offers a 15-key Godan keyboard layout, which is an alphabet layout optimized for romaji input. The letters fit in a five rows by three columns grid. The left column consists of the five vowels, in the same order as the columns in the Gojūon table ("a", "i", "u", "e", "o"), while the central and right column consists of letters for the nine main voiceless consonants of kanas, in the same order as the rows in the Gojūon table ("k", "s", "t", "n", ""; "h", "m", "y", "r", "w"). Other characters are typed by flick gesture: