1. A method comprising: outputting, by a computing device, for display at a display device, a graphical user interface including a committed-text region, a text-suggestion region, and a graphical keyboard comprising a plurality of keys; determining, by the computing device, a first single-touch gesture detected at a first region of a presence-sensitive input device that corresponds to a first location of the display device at which a first key of the plurality of keys is displayed and a second single-touch gesture detected at a second region of the presence-sensitive input device that corresponds to a second location of the display device at which a second key of the plurality of keys is displayed, wherein a first character is associated with the first key and a second character is associated with the second key; determining, by the computing device, based on the first single-touch gesture and the second single-touch gesture, a first candidate word of a candidate phrase and a second candidate word of the candidate phrase, wherein the first candidate word comprises the first character and the second candidate word comprises the second character; outputting, by the computing device, for display in the committed-text region of the graphical user interface, the first candidate word and the second candidate word; and outputting, by the computing device and for display in the text-suggestion region of the graphical user interface, at least one next word that is subsequent to the first candidate word and the second candidate word in the candidate phrase.
8. The method of claim 1 , wherein: the first single-touch gesture is one of a first plurality of single-touch gestures detected at the presence-sensitive input device; the second single-touch gesture is one of a second plurality of single-touch gestures detected at the presence-sensitive input device; the first candidate word is further determined based at least in part on the first plurality of single-touch gestures; and the second candidate word is further determined based at least in part on the second plurality of single-touch gestures.