1. A method comprising: responsive to receiving an indication of a first user input, outputting, by the computing device and for display, text that is based on the first user input; determining, by the computing device and based at least in part on the first user input, a list of one or more suggested character strings; responsive to receiving an indication of a second user input, determining, by the computing device, whether the received second user input includes a replacement gesture, wherein the replacement gesture includes a first gesture in a first direction and a second gesture in a second direction that is substantially opposite to the first direction; and responsive to determining that the received second user input includes the replacement gesture, outputting, by the computing device and for display, in place of the text, a character string from the list of one or more suggested character strings.