-er -ol bbb bbc bbd bbe bbk bbl bbo bbr bbs bcb bcc bcd bce bck bcl bco bcr bcs bdb bdc bdd bde bdk bdl bdo bdr bds be- beb bec bed bee bek bel beo ber bes bkb bkc bke bkk bkl bko bkr bks blb blc bld ble blk bll blo blr bls bob boc bod boe bok bol boo bor bos brb brd bre brk brl bro brr brs bsb bsc bsd bse bsk bsl bso bsr bss c-- cbb cbc cbd cbe cbk cbl cbo cbr cbs ccb ccc ccd cce cck ccl cco ccr ccs cdb cdc cdd cde cdk cdl cdo cdr cds ce- ceb cec ced cee cek cel ceo cer ces ckb ckc ckd cko cks cl- clb clc cld cle clk cll clo clr cls co- cob coc cod coe cok col coo cor cos crb crc crd cre crk crl cro crr crs csb csc csd cse csk csl cso csr css dbb dbc dbd dbe dbk dbl dbo dbr dbs dcb dcc dcd dce dck dcl dco dcr dcs ddb ddc ddd dde ddk ddl ddo ddr dds de- deb dec ded dee dek del deo der des dkb dkc dke dkk dkl dko dkr dks dl- dlb dlc dld dle dlk dll dlo dlr dls dob doc dod doe dok dol doo dor dos drb drc drd dre drk drl dro drr drs dsb dsc dsd dse dsk dsl dso dsr dss ebb ebc ebd ebe ebk ebl ebo ebr ebs ec- ecb ecc ecd ece eck ecl eco ecr ecs ed- edb edc edd ede edk edl edo edr eds eeb eec eed eee eek eel eeo eer ees ekb ekc ekd eke ekl eko ekr eks elb elc eld ele elk ell elo elr els eo- eob eoc eod eoe eok eol eoo eor eos erb erc erd ere erk erl ero err ers es- esb esc esd ese esk esl eso esr ess kbb kbc kbd kbe kbk kbl kbo kbr kbs kcb kcc kcd kce kck kcl kcr kcs kdb kdc kde kdk kdl kdo kdr kds ke- keb kec ked kee kek kel keo ker kes kkb kkc kke kkk kkl kkr kks kl- klb klc kld klo klr kls kob koc kod koe kok kol koo kor kos krc krd krk krl kro krr krs ksb ksc ksd kse ksk ksl kso ksr kss lbb lbc lbd lbe lbk lbl lbo lbr lbs lcb lcc lcd lce lck lcl lco lcr lcs ldb ldc ldd lde ldk ldl ldo ldr lds leb lec led lee lek lel leo ler les lkb lkl lkr lks llb llc lld lle llk lll llo llr lls lob loc lod loe lok lol loo lor los lrb lrc lrd lrk lro lrr lrs lsb lsc lsd lse lsk lsl lso lsr lss ob- obb obc obd obe obk obl obo obr obs oc- ocb occ ocd ock ocl oco ocr ocs odb odc odd ode odl odo odr ods oeb oec oed oee oel oeo oer oes okb okc okd oke okk okl oko okr oks olb olc old ole olk oll olo ols oo- oob ooc ood ook ool ooo oor oos or- orb orc ord ore ork orl oro orr ors os- osb osc osd ose osk osl oso osr oss rbb rbc rbd rbe rbk rbl rbo rbr rbs rcb rcc rcd rce rcl rco rcr rcs rdb rdc rdd rde rdl rdo rdr rds re- reb rec red ree rek rel reo rer res rkb rkc rke rkk rko rks rlc rld rle rll rlo rlr rls rob roc rod roe rok rol roo ror ros rrb rrc rrd rrk rrl rrr rrs rsb rsc rsd rse rsk rsl rso rsr rss sbb sbc sbd sbe sbk sbl sbo sbr sbs scb scc scd sce sck scl sco scr scs sdb sdc sdd sde sdk sdl sdo sdr sds se- seb sec sed see sek sel seo ser ses sk- skb skc skd ske skk skl sko skr sks slb slc sld sle slk sll slo slr sls sob soc sod soe sok sol soo sor sos sr- srb src srd sre srk srl sro srr srs ss- ssb ssc ssd sse ssk ssl sso ssr sss

-ose bbbb bbbs bbdd bbdo bbeb bblb bbls bbrc bcbc bcbs bccc bccl bccs bcde bcds bcec bcer bces bcor bcos bcrs bcsc bcsl bcss bd-r bdbc bddc bdes bdle bdls bdos bdsd bebb bebe bebo beck becs bede bedl bedo beds beeb beed beek beel beer bees beke beko beks beld bele belk bell belo bels beo- beod beok beor beos berc berd bere berk bero berr bers bes- bese besk beso bess bldc bldr bleb bled blee blek bleo bles blkb blkd blls blob bloc blod blok bloo blrc blss bobb bobe bobo bobs boce bock boco bocs bodb bode bodo bods boec boee boel boeo boer boes boke boko boks bold bole bolk boll bolo bols boob booc bood booe book bool boor boos bor- bord bore bork boro borr bors bosc bose bosk boso boss brcb brce brdo brds breb brec bred bree brek brel breo brer bres brkb brls brob broc brod broe brok brol broo bror bros brrr brrs brsb brsr bsbd bscs bsdl bseb bsec bsed bsee bser bses bslc bsod bsos bsrd bssc bssd bsse c-bo c-cd cbbc cbbs cbcc cbce cbcl cbcr cbcs cbdb cbdc cbdo cbds cbec cbee cber cbkl cbko cbkr cblb cblc cbol cbrd cbre cbrl cbsc cbse ccbc cccb cccc cccl cccs ccdc ccdr ccds cced ccee ccel cclc ccls ccob ccoc ccod ccrc ccre ccrl ccrs ccsd ccsl ccss cd-e cd-r cdcs cddb cddl cddr cdec cder cdes cdls cdos cdre cdrs cdss cebs cec- cece ceco cecs cedd cede cedo ceeb ceec ceel cees ceke cel- celc cele cell celo cels ceol ceor ceos cer- cerc cerd cere cerl cero cers cesc cese cesr cess ckbc ckbe ckck ckcl