bbbb bbeb bbet bblb bebb bebe bebi beeb beel beep beet beil beit bele beli bell belp belt bete beti bett bibb bibe bibi bibl bieb biel biet bile bili bill bilt bipp bite bitt bitx bixi blbt bleb blee blei blet blip blit blix bpel bpti btbp btex btie btlp bttb ebel ebit ebix ebli eeee eele eete eext eiei eile eitb eiti el-b el-p elbe elbi elee elet elex elie elil elit elix elle elli elpe elpi elte epee epi- epie epil epip epit epix eple epll eppp epte epxp etee etel etix ette etti exel exit expt exte extl i-be ibet ibex ibie ible ibtb ibtl ieet ieie iele iett iiie iiii iiit iitt ilbx ile- ilet ilex ilie ilit ill- ille illi illp illt ilpe ilxx ipet ipex ipie ipil ipix ipxe itbe itel itep itet itex itie itil itll ixil ixxi leel leep leet leib leie leil leit leix lele leli lell lepe lepi lepp lept lete leti lett lexi lext lexx libe libx lieb liel liep liet liii lilb lile lili lill lilt lip- lipb lipe lipi lipl lipp litb lite liti litl litt lixi lixt llet llll lppl lptb ltbl ltee ltib lxii lxxi lxxx pbil pebl peel peep peet peil peip peit pel- pelb pele pell pelt pepe pepi pete peti pett pibb pibi piel piep piet piip pil- pile pili pill pilt pipe pipi pipp pite piti pitt pitx pixl pixx ple- pleb plee plei plet plex plib plie plip plit plpp pltt ppib ppie pple ppli pppp pptt ptbl tbil tbit tbtp teel teet teie teil teip tel- tele teli tell telt tepe tepi tepp tete teti tett tetx text tibi tie- tiee tiei tiel tiep tiet tiit tile till tilt tip- tipe tipi tipp tipt tite titi titp titt tixt tlli tltx tppp tpte tptp ttbb tttt txii xbee xbel xexe xibe xiii xil- xili xill xilp xipe xixi xlet xlib xlii xlix xlpe xtep xtie xxii xxix xxxi xxxx