-er bbb bbc bbd bbe bbk bbo bbr bbs bcb bcc bcd bce bck bco bcr bcs bdb bdc bdd bde bdk bdo bdr bds be- beb bec bed bee bek beo ber bes bkb bkc bke bkk bko bkr bks bob boc bod boe bok boo bor bos brb brd bre brk bro brr brs bsb bsc bsd bse bsk bso bsr bss c-- cbb cbc cbd cbe cbk cbo cbr cbs ccb ccc ccd cce cck cco ccr ccs cdb cdc cdd cde cdk cdo cdr cds ce- ceb cec ced cee cek ceo cer ces ckb ckc ckd cko cks co- cob coc cod coe cok coo cor cos crb crc crd cre crk cro crr crs csb csc csd cse csk cso csr css dbb dbc dbd dbe dbk dbo dbr dbs dcb dcc dcd dce dck dco dcr dcs ddb ddc ddd dde ddk ddo ddr dds de- deb dec ded dee dek deo der des dkb dkc dke dkk dko dkr dks dob doc dod doe dok doo dor dos drb drc drd dre drk dro drr drs dsb dsc dsd dse dsk dso dsr dss ebb ebc ebd ebe ebk ebo ebr ebs ec- ecb ecc ecd ece eck eco ecr ecs ed- edb edc edd ede edk edo edr eds eeb eec eed eee eek eeo eer ees ekb ekc ekd eke eko ekr eks eo- eob eoc eod eoe eok eoo eor eos erb erc erd ere erk ero err ers es- esb esc esd ese esk eso esr ess kbb kbc kbd kbe kbk kbo kbr kbs kcb kcc kcd kce kck kcr kcs kdb kdc kde kdk kdo kdr kds ke- keb kec ked kee kek keo ker kes kkb kkc kke kkk kkr kks kob koc kod koe kok koo kor kos krc krd krk kro krr krs ksb ksc ksd kse ksk kso ksr kss ob- obb obc obd obe obk obo obr obs oc- ocb occ ocd ock oco ocr ocs odb odc odd ode odo odr ods oeb oec oed oee oeo oer oes okb okc okd oke okk oko okr oks oo- oob ooc ood ook ooo oor oos or- orb orc ord ore ork oro orr ors os- osb osc osd ose osk oso osr oss rbb rbc rbd rbe rbk rbo rbr rbs rcb rcc rcd rce rco rcr rcs rdb rdc rdd rde rdo rdr rds re- reb rec red ree rek reo rer res rkb rkc rke rkk rko rks rob roc rod roe rok roo ror ros rrb rrc rrd rrk rrr rrs rsb rsc rsd rse rsk rso rsr rss sbb sbc sbd sbe sbk sbo sbr sbs scb scc scd sce sck sco scr scs sdb sdc sdd sde sdk sdo sdr sds se- seb sec sed see sek seo ser ses sk- skb skc skd ske skk sko skr sks sob soc sod soe sok soo sor sos sr- srb src srd sre srk sro srr srs ss- ssb ssc ssd sse ssk sso ssr sss

-ose bbbb bbbs bbdd bbdo bbeb bbrc bcbc bcbs bccc bccs bcde bcds bcec bcer bces bcor bcos bcrs bcsc bcss bd-r bdbc bddc bdes bdos bdsd bebb bebe bebo beck becs bede bedo beds beeb beed beek beer bees beke beko beks beo- beod beok beor beos berc berd bere berk bero berr bers bes- bese besk beso bess bobb bobe bobo bobs boce bock boco bocs bodb bode bodo bods boec boee boeo boer boes boke boko boks boob booc bood booe book boor boos bor- bord bore bork boro borr bors bosc bose bosk boso boss brcb brce brdo brds breb brec bred bree brek breo brer bres brkb brob broc brod broe brok broo bror bros brrr brrs brsb brsr bsbd bscs bseb bsec bsed bsee bser bses bsod bsos bsrd bssc bssd bsse c-bo c-cd cbbc cbbs cbcc cbce cbcr cbcs cbdb cbdc cbdo cbds cbec cbee cber cbko cbkr cbrd cbre cbsc cbse ccbc cccb cccc cccs ccdc ccdr ccds cced ccee ccob ccoc ccod ccrc ccre ccrs ccsd ccss cd-e cd-r cdcs cddb cddr cdec cder cdes cdos cdre cdrs cdss cebs cec- cece ceco cecs cedd cede cedo ceeb ceec cees ceke ceor ceos cer- cerc cerd cere cero cers cesc cese cesr cess ckbc ckbe ckck ckco ckcs ckdo cker ckob ckoc ckoo ckor ckos ckrc ckrd cksb ckso cobb cobe cobo cobs coce cock coco codd code cods coed coes cok- coke coko coob cood cook coos cor- corb corc cord core cork coro corr cors cosc cose coso coss crbc crcc crce crcr crdc cre- creb crec cred cree creo cres crkc crob croc crod croe crok croo cror crss cscb cscc cscd csce csco cscr cscs csdb csdr csec csee cser csks csob csor csos csrc csrd csrs cssd csse cssr d-bo dbcc dbcs dbos dbrs dbss dcbc dccb dccc dccs dcdb dcds dcos dcrk dcsc dcss dddd ddes ddoc ddrc ddre ddss debe debs dec- decc decd dece deck deco decs dedd dede dedo deeb deed deek deer dees dek- deke deks deor deos der- derb derc dere derk dero derr ders des- desc dese desk deso dess dkdc dobb dobe dobs doce dock doco docs dod- dodd dode dodo dods doek doer does doke doko doob dood dook door doos dorc dord dore dork doro dorr dors dose dosk doso doss drbc dred dree drek dres drob drod drrs dsbc dscc dscr dscs dsdr dsos dsrc dsrr dssc ebbc ebbo ebbr ebbs ebcc ebed eber ebes eboe eboo ebor ebos ebro ecbc ecbe eccb eccc ecce ecco ecdc eced eces ecko ecks eco- ecod ecos ecrc ecrr ecsc ecse ecss eddc edde eddo edds ede- eder edes edoc edod edos edss eecs eede eeee eees eeke eeks eeoc eerc eero eers eese eesk ekco ekeb eked ekek eker ekes ekos eocd eode eoes eore erbb erbe ercc erce erde erds ereb erec ered erer eres erke