-hou a-be a-ha aaaa aaab aaac aaae aaah aaba aabb aabc aabh aaca aacb aacc aace aach aaco aacu aaea aaec aaha aaoe aaoo abaa abab abac abae abau abb- abba abbb abbe abbo abca abcb abcc abch abec abee abha abho aboa abob aboh aboo abou abua abue acaa acab acac acae acba acca accc acce acch acco accu ace- acea acec aceh acha ache achh acho achu acoa acoe acoh acou acu- acue acuo aeac aecb ahab ahac ahah ahau ahha ahoa ahoe ahua aoah aoba aoca aoce aoeu auaa aube auca auce auch baaa baah baba babb babe babo babu bac- baca bacc bace bach baco baha baho bahu baoh bau- bbau bbbb bbch bbeb bcaa bcbc bcca bccc bcec bche bcuc beah beau beba bebb bebe bebo beca bech becu beeb beo- bhao bhca bhcc bhuu boab boac boba bobb bobe bobo bobu boca boce boch boco bocu boea boec boee boeo boha boho bohu boob booc booe booh boua boue bouh buba bubb bube bubo bubu buca bucc buce buch buco bucu buea bueu buha buhe buho c-bo caaa caab caac caah caba cabe cabo cabu cac- caca cacc cace cach caco caec caeu caha cahe cauc cauo cbac cbbc cbca cbcc cbce cbcu cbea cbec cbee cbha ccaa ccab ccac ccba ccbc ccca cccb cccc cccu ccee ccha cche ccob ccoc ccuc ceac ceba cebu cec- ceca cece ceco ceeb ceec ceou chaa chab chac chae chah chao chau chca chce chch chea cheb chec chee cheh cheu chha choc choh choo chou chua chub coba cobb cobe cobh cobo cobu coca coce coch coco cocu coha coho coob cooh coua coub coue cuau cub- cuba cubb cube cuca cucc cuce eaba eabh eaca eacc each eaec ebac ebba ebbc ebbo ebcc eboe eboo ecaa ecac ecao ecbc ecbe ecca eccb eccc ecce ecco echa eche echo eco- ecou ecua eeca eeea eeee eeoc ehaa ehcc ehea eheh eheu euba eubc euch haab haba habe habo habu hace haco haec haha haho hau- haue hboc hcbc hcca hccb hccc hcch heah hebb hebe hebo heca hech heeb hehe heho heou heue hhaa hhhh hoac hoba hobe hobo hoca hoce hoch hoha hohe hoho hooe houe huac huah huba hubb hube hubo huch hucu huea huhu huub o-eo oaau oahe oahu obba obbo obea obec oboe obuh ocab ocac ocbc occa occc oce ocee ocha oche oec- oeca oecc oeec ohau ohba ohbe ohcc ohee ohho ohob ohoh ooaa ooba oobe ooha ooho oooh oooo ouac oucc ouch ouea ouu- uabc uaca uaoc uaua ubac ubba ubbe ubbo uboc ucbc ucca ucea ucha uche ucho ucua ueba uhoh uhuh uocc uuoc uuuu