a-be a-fu aaaa aaab aaac aaae aaaf aaam aaba aabb aabc aabm aaca aacb aacc aace aacf aacm aacu aaea aaec aaem aafa aafb aafc aaff aama aamb aamc aame abaa abab abac abae abaf abam abau abax abb- abba abbb abbe abca abcb abcc abcf abec abee abff abma abmb abmc abua abue abuf abum acaa acab acac acae acba acca accc acce accf accm accu ace- acea acec acem acfc acfe acfm acma acmc acme acmf acmu acu- acue acuf acum aeac aeaf aecb afaa afam afca afcb afcc afcu afee affa affc afma afmc afua afue afxe amaa amac amae amam amax amb- amba ambe ambu ambx amca amcc amec amee ameu amex amfm amm- amma amme ammu amua amum auaa aube auca auce aufc aufe auma auxa axaf axce axum ba-x baaa baaf baam baba babb babe babm babu bac- baca bacc bace bafc baff bama bamb bamc bame bamf bamm bamu bau- bauf baum baux bbau bbbb bbcm bbeb bbfc bcaa bcam bcbc bcca bccc bccm bcec bcfc bcfm bcma bcuc beaf beam beau beba bebb bebe beca becu beeb beef beem befa befe beff bema beme bemu beux bfca bfme bmaa bmce bmfc buba bubb bube bubu buca bucc buce bucu buea buem bueu bufc bufe buff bum- buma bumb bumf buxa caaa caab caac caaf caam caba cabe cabf cabu cac- caca cacc cace cacm caec caem caeu caex cafa cafb cafc cafe caff cafu cama camb camc came camm camx cauc cauf caum caux caxa cbac cbax cbbc cbca cbcc cbce cbcm cbcu cbea cbec cbee cbef cbfb cbfc cbme cbux cbxa ccaa ccab ccac ccaf ccam ccba ccbc ccca cccb cccc cccf cccm cccu ccee ccfa ccfc ccff ccma ccmb ccmc ccmm ccuc ceac ceba cebu cec- ceca cece cecm ceeb ceec ceem cef- cefa cefc cema cemb ceme cemm cemu ceux cexe cfaa cfab cfac cfae cfam cfax cfbc cfca cfcb cfcf cfcm cffb cfma cfmb cfmu cfmx cmaa cmac cmax cmba cmbc cmbx cmcc cmea cmec cmfb cmmb cmmc cuau cub- cuba cubb cube cuca cucc cuce cucm cufa cufc cuff cum- cuma cume cxxx eaaf eaba eaca eacc eaec eafb eama eame eaux ebac ebam ebba ebbc ebcc ebfc ecaa ecac ecam ecbc ecbe ecca eccb eccc ecce eccm ecef ecem ecfa ecfc ecma ecua eeca eeea eeee eefa eefe efab efax efca effa efma efua emac emae emam emax emba embe emcc emcf emeu emex emma emme emmu euba eubc eufc eumc exa- exam exec exum faaa faac faam faba fabe fabm fabu faca facc face faeb faem faex fafa fafc fafe faff fama fame faue faux faxe fcab fcba fcca fccf feaf feam feba fece feeb feem fefc fefe feff fema femb feme femm feux ffcc ffee ffff fmca fmea fubb fubu fuc- fuca fucm fufc fuff fufu fumc fume fxcm maaa maac maaf maam maba mabe mabu mac- maca macb macc mace macu macx maee maem mafa mafb mafc maff mafu mama mamc mame mamf mamu maua mauf maum maux maxx mbac mbam mbba mbca mcaa mcac mcba mcbc mcca mccc mccx mcef mcfa mcfc mcmc mcmx mcxc mebe mec- meca mecc mece meef meem mefe meff mema memc meme memu memx meum meux mexx mfbm mfcc mffa mmaa mmab mmac mmcc mmcm mmcx mmea mmff mmmc mmmm mmxx muac mube muc- mucc muce mucu muee mufc muff mufu muma mume mumm mumu muxe muxu uabc uaca uafa uamc uaua ubac ubba ubbe ucam ucbc ucca ucea ucfa ucfb ucmc ucua ueba uefa ufcu uffa uffe umaa umac umax umb- umba umbe umec umff umma uuuu uxem uxue xace xbee xefe xema xeme xemu xexe xfce xmax xuxa xuxu xxxx