A method includes displaying a second electronic screen overlay on a display, in response to an initial selection of one of provided polysemous symbols, the second electronic screen overlay being the electronic screen overlay associated with the selected polysemous symbol; storing, in the memory, a plurality of visual scenes, each respective one of the plurality of visual scenes being stored in association with at least two symbol sequences beginning with the initially selected polysemous symbol; and displaying one of the plurality of visual scenes on the display, in response to selection of one of the symbols on the displayed second electronic screen overlay, the displayed visual scene being stored in the memory in association with at least two symbol sequences including, in sequence, the initially selected polysemous symbol and the selected one of the symbols on the displayed second electronic screen overlay.