-al -ol a-a a-b aaa aab aad aaf aal aao aar aas ab- aba abb abd abf abl abo abr abs ad- ada adb add adf adl ado adr ads af- afa afb afd aff afl afo afr afs al- ala alb ald alf all alo alr als aoa aob aod aof aol aoo aor aos ar- ara arb ard arf arl aro arr ars as- asa asb asd asf asl aso asr ass baa bab bad baf bal bao bar bas bba bbb bbd bbf bbl bbo bbr bbs bda bdb bdd bdf bdl bdo bdr bds bfa bfb bfd bff bfl bfo bfr bfs bla blb bld blf bll blo blr bls boa bob bod bof bol boo bor bos bra brb brd brf brl bro brr brs bsa bsb bsd bsf bsl bso bsr bss daa dab dad daf dal dao dar das dba dbb dbd dbf dbl dbo dbr dbs dda ddb ddd ddf ddl ddo ddr dds dfa dfb dfd dff dfl dfo dfr dfs dl- dla dlb dld dlf dll dlo dlr dls doa dob dod dof dol doo dor dos dra drb drd drl dro drr drs dsa dsb dsd dsf dsl dso dsr dss faa fab fad faf fal fao far fas fba fbb fbd fbf fbl fbo fbr fbs fda fdb fdd fdf fdl fdo fdr fds ffa ffd fff ffl ffo ffr ffs fla flb fld flf fll flo flr fls foa fob fof fol foo for fos fra frb frd frf frl fro frr frs fsa fsb fsd fsf fsl fso fsr fss la- laa lab lad laf lal lao lar las lba lbb lbd lbf lbl lbo lbr lbs lda ldb ldd ldf ldl ldo ldr lds lfa lfb lfd lff lfl lfo lfr lfs lla llb lld llf lll llo llr lls loa lob lod lof lol loo lor los lra lrb lrd lrf lro lrr lrs lsa lsb lsd lsf lsl lso lsr lss oaa oab oad oaf oal oao oar oas ob- oba obb obd obf obl obo obr obs oda odb odd odf odl odo odr ods of- ofa ofb ofd off ofl ofo ofr ofs ola olb old olf oll olo ols oo- ooa oob ood oof ool ooo oor oos or- ora orb ord orf orl oro orr ors os- osa osb osd osf osl oso osr oss ra- raa rab rad raf ral rao rar ras rba rbb rbd rbf rbl rbo rbr rbs rda rdb rdd rdf rdl rdo rdr rds rfa rfb rfd rff rfl rfo rfr rfs rla rld rlf rll rlo rlr rls roa rob rod rof rol roo ror ros rra rrb rrd rrf rrl rrr rrs rsa rsb rsd rsf rsl rso rsr rss saa sab sad saf sal sao sar sas sba sbb sbd sbf sbl sbo sbr sbs sda sdb sdd sdf sdl sdo sdr sds sfa sfb sfd sff sfl sfo sfr sfs sla slb sld slf sll slo slr sls soa sob sod sof sol soo sor sos sr- sra srb srd srf srl sro srr srs ss- ssa ssb ssd ssf ssl sso ssr sss

a-do aaaa aaab aaad aaaf aaal aaar aaas aaba aabb aabd aabl aada aads aafa aafb aafd aaff aafl aala aald aall aalo aals aaoo aara aard aaro aars aasa aasd aasf aass abaa abab abad abaf abal abar abas abb- abba abbb abbo abbr abbs abda abdo abff abla ablo abls aboa abob abod abof abol aboo abor abos abra abro abrs abs- absa absd absf absl abss adaa adab adad adal adao adar adas adba adda addd addl addo addr adds adfa adfl adfs adls adob adod adoo ador ados adra adro adrs adsa adsl adso adsr adss afaa afad afao afar afbs afdb afdl affa affo affs afla afoa afol afoo afor afr- afra afro afrs afsa afsb alaa alad alal alao alar alas alb- alba albo albs ald- alda aldl aldo alds alfa alfs all- alla alll allo allr alls aloa alod alof alol aloo alor alos alro alsa also aoba aola aora aorb aors aosd aoss arab arad araf aral arar aras arba arbs arda ardf ardl ardo ards arfa arfb arff arfs arla arlo aroa arob arod aroo aror aros arr- arra arro arrr arrs ars- arsa arsd arso asaa asab asad asaf asal asao asar asas asba asbo asda asdf asdl asdo asds asfa asla aslo aslr asob asod asof asor asos asra asro asrs assa assd assl asso assr asss baaa baad baaf baal baar baas baba babb babo babr babs bada badb badd bado badr bads baff bafo bala bald balf ball balo bals baol baos bar- bara barb bard barf baro barr bars basa basf baso bass bbad bbas bbbb bbbs bbdd bbdo bblb bbls bd-r bdls bdos bdsd bfas bffl bffs bfsr blaa blab blad blas bldr blls blob blod bloo blss boab boad boal boar boas boba bobb bobo bobs boda bodb bodo bods bofa bofd boff bofs bola bold boll bolo bols boob bood boof bool boor boos bor- bora bord borf boro borr bors bosa boso boss brab brad braf brao bras brda brdo brds brls broa brob brod brol broo bror bros brrr brrs brsb brsr bsaa bsas bsbd bsdl bsfa bsff bsfs bsod bsos bsra bsrd bssd d-bo daab daad daal daar daas daba dabb dabo dabs dada dado dads dafa daff dafo dafs dala dalf dall dalo dals daos dara darb dard darf darl daro darr dars dasa dasb dasd dasl dass dbar dbas dbfo dbfs dbls dbos dbrs dbsa dbss dddd ddss dfaf dfas dfds dffa dfrf dlab dlbd dlos dlrs doab doal doar doas doba dobb dobl dobs dod- doda dodd dodo dods doff dola dold dolf doll dolo dols doob dood doof dool door doos dora dord dorf doro dorr dors dosa doso doss draa drab drad draf drar dras drba drda drob drod drof drol drra drrs drsa dsba dsda dsdr dsfa dsls dsoa