bbbb bbbs bbeb bbet bblb bbls bebb bebe beeb beel bees beet bele bell bels belt belu bes- bese bess best bete bets bett betu blbt bleb blee bles blet bleu blls blss blst blts blub blue blus blut bseb bsee bses bset bsse bsts btss bttb btus bubb bube bubs bubu buel bueu bulb bule bull buls bult bulu buse buss bust busu but- bute buts butt buus ebbs ebel ebes ebul ebus eeee eees eele eels eese eete eets eetu el-b elbe elbu elee eles elet elle ells ellu else elst elsu elte elts elue elul elus esbs esee esel eses eset esse essl esst essu este ests esus etee etel etes etsu ette ettu eule euse le-u lebu leel lees leet lele lell lelu lese less lest lesu lete lets lett llbs lles llet lleu llll lsbu lses lset lsts ltbl ltee lube lubs lues lule lull lulu luse luss lust lute luts sbbs sbse sbst sbus se-e se-s se-t se-u sebe sebs sebt seeb seel sees seet seeu selb sele sell sels selt selu sese sess sest set- sete setl sets sett seul sleb slee sles slet slst slsu slts slub slue slut ssee sses sset ssle sslt sssb ssss sstb sstl ssts stbs stee stel stes stet stle stlt stss stub stue stul stus stut sub- subb subl subs suee suel sues suet sueu sul- sule sull sult sulu sus- suse suss sust susu sute sutu suus tbbs tbst tebu teel tees teet tel- tele tell tels telt telu tese tesl tess test tete tets tett tetu teut tses tset tsse tsst tsts ttbb ttss tttt ttul tubb tube tubs tubu tuel tues tuet tule tull tulu tuss tust tute tutl tuts tutt tutu ubbe ubet uble ubls uele uell uess uleb ulee ules ulle ults ultt ulul ulus usbe usbl usbs usee usel uses uset usle uslu ussb usse usss usst ussu ustb uste usts usul usus utel utes utsl uttu uulu uuuu