-er bbb bbc bbd bbe bbo bbr bbs bbt bcb bcc bcd bce bco bcr bcs bct bdb bdc bdd bde bdo bdr bds bdt be- beb bec bed bee beo ber bes bet bob boc bod boe boo bor bos bot brb brd bre bro brr brs brt bsb bsc bsd bse bso bsr bss bst btb btc btd bte bto btr bts btt c-- cbb cbc cbd cbe cbo cbr cbs cbt ccb ccc ccd cce cco ccr ccs cct cdb cdc cdd cde cdo cdr cds cdt ce- ceb cec ced cee ceo cer ces cet co- cob coc cod coe coo cor cos cot crb crc crd cre cro crr crs crt csb csc csd cse cso csr css cst ctb ctc ctd cte cto ctr cts ctt dbb dbc dbd dbe dbo dbr dbs dbt dcb dcc dcd dce dco dcr dcs dct ddb ddc ddd dde ddo ddr dds ddt de- deb dec ded dee deo der des det dob doc dod doe doo dor dos dot drb drc drd dre dro drr drs drt dsb dsc dsd dse dso dsr dss dst dtb dtc dtd dte dto dtr dts dtt ebb ebc ebd ebe ebo ebr ebs ebt ec- ecb ecc ecd ece eco ecr ecs ect ed- edb edc edd ede edo edr eds edt eeb eec eed eee eeo eer ees eet eo- eob eoc eod eoe eoo eor eos eot erb erc erd ere ero err ers ert es- esb esc esd ese eso esr ess est etb etc etd ete eto etr ets ett ob- obb obc obd obe obo obr obs obt oc- ocb occ ocd oco ocr ocs oct odb odc odd ode odo odr ods odt oeb oec oed oee oeo oer oes oet oo- oob ooc ood ooo oor oos oot or- orb orc ord ore oro orr ors ort os- osb osc osd ose oso osr oss ost ot- otb otc otd ote oto otr ots ott rbb rbc rbd rbe rbo rbr rbs rbt rcb rcc rcd rce rco rcr rcs rct rdb rdc rdd rde rdo rdr rds rdt re- reb rec red ree reo rer res ret rob roc rod roe roo ror ros rot rrb rrc rrd rrr rrs rrt rsb rsc rsd rse rso rsr rss rst rtb rtc rtd rte rto rtr rts rtt sbb sbc sbd sbe sbo sbr sbs sbt scb scc scd sce sco scr scs sct sdb sdc sdd sde sdo sdr sds sdt se- seb sec sed see seo ser ses set sob soc sod soe soo sor sos sot sr- srb src srd sre sro srr srs srt ss- ssb ssc ssd sse sso ssr sss sst stb stc std ste sto str sts stt tbb tbc tbd tbe tbo tbr tbs tbt tcb tcc tcd tce tco tcr tcs tct tdb tdc tdd tde tdo tdr tds tdt te- teb tec ted tee teo ter tes tet to- tob toc tod toe too tor tos tot trb trc trd tre tro trr trs trt tsb tsc tsd tse tso tsr tss tst ttb ttc ttd tte tto ttr tts ttt

-ose bbbb bbbs bbdd bbdo bbeb bbet bbrc bcbc bcbs bccc bccs bcde bcds bcec bcer bces bcet bcor bcos bcrs bcsc bcss bctc bcts bd-r bdbc bddc bdes bdos bdsd bebb bebe bebo becs bede bedo beds beeb beed beer bees beet beo- beod beor beos beot berc berd bere bero berr bers bert bes- bese beso bess best betc bete beto bets bett bobb bobe bobo bobs boce boco bocs bodb bode bodo bods boec boee boeo boer boes boet boob booc bood booe boor boos boot bor- bord bore boro borr bors bort bosc bose boso boss bost botb botd bote boto bots bott brcb brce brdo brds brdt breb brec bred bree breo brer bres bret brob broc brod broe broo bror bros brot brrr brrs brsb brsr brst brtc bsbd bscs bseb bsec bsed bsee bser bses bset bsod bsos bsrd bssc bssd bsse bsts btcc btcs btdt btec btob btor btrc btrt btss bttb c-bo c-cd cbbc cbbs cbcc cbce cbcr cbcs cbct cbdb cbdc cbdo cbds cbec cbee cber cbet cbot cbrd cbre cbrt cbsc cbse cbtc ccbc cccb cccc cccs ccdc ccdr ccds cced ccee ccob ccoc ccod ccrc ccre ccrs ccrt ccsd ccss ccst cctb cctc cctt cd-e cd-r cdcs cddb cddr cdec cder cdes cdos cdot cdre cdrs cdss cebs cec- cece ceco cecs cect cedd cede cedo cedt ceeb ceec cees ceor ceos cer- cerc cerd cere cero cers cert cesc cese cesr cess cest cet- cete ceto cets cobb cobe cobo cobs coce coco coct codd code cods coed coes coob cood coos coot cor- corb corc cord core coro corr cors cort cosc cose coso coss cost cotb cotc cote coto cots cott crbc crcc crce crcr crdc cre- creb crec cred cree creo cres cret crob croc crod croe croo cror crot crrt crss crst crtc crts cscb cscc cscd csce csco cscr cscs csdb csdr csec csee cser cset csob csor csos csot csrc csrd csrs cssd csse cssr cstc cstd csto cstr csts ctbs ctec ctor ctos ctot ctrc ctrs ctsc ctss ctts d-bo dbcc dbcs dbos dbrs dbss dbtt dcbc dccb dccc dccs dcct dcdb dcds dcos dcsc dcss dctc dcts dddd ddes ddoc ddot ddrc ddre ddss ddts debe debs debt dec- decc decd dece deco decs dect dedd dede dedo deeb deed deer dees deet deor deos der- derb derc dere dero derr ders des- desc dese deso dess dest dete deto detr dets dobb dobe dobs doce doco docs doct dod- dodd dode dodo dods doer does doob dood door doos doot dorc dord dore doro dorr dors dort dose doso doss dost dotd dote doto dots dott drbc dred dree dres dret drob drod drot drrs dsbc dscc dscr dscs dsdr dsos dsrc dsrr dssc dsst dstc dsto dsts dtcc