a-ha aaaa aaac aaae aaah aaca aacc aace aach aaco aaea aaec aaha aaoe aaoo acaa acac acae acca accc acce acch acco ace- acea acec aceh acha ache achh acho acoa acoe acoh aeac ahac ahah ahha ahoa ahoe aoah aoca aoce caaa caac caah cac- caca cacc cace cach caco caec caha cahe ccaa ccac ccca cccc ccee ccha cche ccoc ceac cec- ceca cece ceco ceec chaa chac chae chah chao chca chce chch chea chec chee cheh chha choc choh choo coca coce coch coco coha coho cooh eaca eacc each eaec ecaa ecac ecao ecca eccc ecce ecco echa eche echo eco- eeca eeea eeee eeoc ehaa ehcc ehea eheh hace haco haec haha haho hcca hccc hcch heah heca hech hehe heho hhaa hhhh hoac hoca hoce hoch hoha hohe hoho hooe o-eo oahe ocac occa occc oce ocee ocha oche oec- oeca oecc oeec ohcc ohee ohho ohoh ooaa ooha ooho oooh oooo