-ol bbb bbc bbd bbl bbn bbo bbr bbs bcb bcc bcd bcl bcn bco bcr bcs bdb bdc bdd bdl bdo bdr bds blb blc bld bll bln blo blr bls bnb bnc bnd bnl bnn bno bnr bns bob boc bod bol bon boo bor bos brb brd brl brn bro brr brs bsb bsc bsd bsl bsn bso bsr bss c-- cbb cbc cbd cbl cbn cbo cbr cbs ccb ccc ccd ccl ccn cco ccr ccs cdb cdc cdd cdl cdn cdo cdr cds cl- clb clc cld cll cln clo clr cls cn- cnb cnc cnd cnl cnn cno cnr cns co- cob coc cod col con coo cor cos crb crc crd crl crn cro crr crs csb csc csd csl csn cso csr css dbb dbc dbd dbl dbn dbo dbr dbs dcb dcc dcd dcl dcn dco dcr dcs ddb ddc ddd ddl ddn ddo ddr dds dl- dlb dlc dld dll dlo dlr dls dnb dnc dnd dnl dnn dno dnr dns dob doc dod dol don doo dor dos drb drc drd drl drn dro drr drs dsb dsc dsd dsl dsn dso dsr dss lbb lbc lbd lbl lbo lbr lbs lcb lcc lcd lcl lcn lco lcr lcs ldb ldc ldd ldl ldn ldo ldr lds llb llc lld lll lln llo llr lls lnb lnc lnd lnl lnn lno lnr lns lob loc lod lol lon loo lor los lrb lrc lrd lrn lro lrr lrs lsb lsc lsd lsl lsn lso lsr lss nbb nbc nbd nbl nbn nbo nbr nbs ncb ncc ncd ncl ncn nco ncr ncs ndb ndc ndd ndl ndn ndo ndr nds nlb nlc nld nll nln nlo nlr nls nnb nnc nnl nnn nno nns no- nob noc nod nol non noo nor nos nrb nrc nrd nrl nrn nro nrr nrs nsb nsc nsd nsl nsn nso nsr nss ob- obb obc obd obl obn obo obr obs oc- ocb occ ocd ocl ocn oco ocr ocs odb odc odd odl odn odo odr ods olb olc old oll oln olo ols on- onb onc ond onl onn ono onr ons oo- oob ooc ood ool oon ooo oor oos or- orb orc ord orl orn oro orr ors os- osb osc osd osl osn oso osr oss rbb rbc rbd rbl rbn rbo rbr rbs rcb rcc rcd rcl rcn rco rcr rcs rdb rdc rdd rdl rdn rdo rdr rds rlc rld rll rln rlo rlr rls rnb rnc rnd rnn rno rnr rns rob roc rod rol ron roo ror ros rrb rrc rrd rrl rrn rrr rrs rsb rsc rsd rsl rsn rso rsr rss sbb sbc sbd sbl sbn sbo sbr sbs scb scc scd scl scn sco scr scs sdb sdc sdd sdl sdn sdo sdr sds slb slc sld sll sln slo slr sls snb snc snd snl snn sno snr sns sob soc sod sol son soo sor sos sr- srb src srd srl srn sro srr srs ss- ssb ssc ssd ssl ssn sso ssr sss

bbbb bbbs bbdd bbdo bblb bbls bbrc bcbc bcbs bccc bccl bccs bcds bcor bcos bcrs bcsc bcsl bcsn bcss bd-r bdbc bddc bdls bdos bdsd bldc bldr blls blno blob bloc blod blon bloo blrc blss bnoc bnor bnrr bnss bobb bobo bobs boco bocs bodb bodo bods bold boll boln bolo bols bonc bond bonn bono bons boob booc bood bool boon boor boos bor- bord born boro borr bors bosc bosn boso boss brcb brdo brds brls brno brns brob broc brod brol bron broo bror bros brrr brrs brsb brsr bsbd bscs bsdl bslc bsnd bsns bsod bson bsos bsrd bssc bssd c-bo c-cd cbbc cbbs cbcc cbcl cbcn cbcr cbcs cbdb cbdc cbdn cbdo cbds cblb cblc cbln cbnd cbol cbrd cbrl cbrn cbsc cbsn ccbc ccbn cccb cccc cccl cccs ccdc ccdn ccdr ccds cclc ccls ccnb ccnc ccnr ccns ccob ccoc ccod ccrc ccrl ccrs ccsd ccsl ccsn ccss cd-r cdcs cddb cddl cddr cdls cdnb cdnc cdon cdos cdrs cdss clcd cldc cldr clob clod clon cloo clor clos clrd clro clrs clsc cnbc cnbl cnco cndd cnrc cnrr cnsl cnss cobb cobo cobs coco codd codl cods col- colb cold coll coln colo cols con- conc cond conn cono cons coob cood cool coon coos cor- corb corc cord corl corn coro corr cors cosc cosl coso coss crbc crcc crcr crdc crls crns crob croc crod crol cron croo cror crss cscb cscc cscd cscl csco cscr cscs csdb csdn csdr csld cslr csob csor csos csrc csrd csrs cssd cssr d-bo dbcc dbcs dbls dbnl dbos dbrn dbrs dbss dcbc dccb dccc dccl dccs dcdb dcds dcls dcns dcon dcos dcsc dcss dddd ddlc ddoc ddrc ddss dlbd dlco dlcs dlos dlrs dncs dnoc dnrc dnsc dobb dobl dobs doco docs dod- dodd dodo dods dold doll dolo dols donc dond donn dono donr dons doob dood dool doon door doos dorc dord dorn doro dorr dors doso doss drbc drno drob drod drol dron drrs dsbc dscc dscn dscr dscs dsdr dsls dsos dsrc dsrr dssc dssn lbcc lbds lblr lbos lbrs lbsc lcbc lccc lccs lcdd lcdr lcds lcls lcor lcrd lcrl lcrs lcsc lcsd lcsr ldls ldos ldrs llbs llcc llcs lldb lldc llds lllc llll lloc llod lloo lncr lndn lnso lob- lobb lobo lobs locc locn loco locs lods lold loll lolo lols lond lono lonr lons loob looc lood lool loon loor loos lord lorn loro lors losc loso loss lrcs lrdd lrds lroc lron lrrc lrrr ls-r lscb lsco lscs lsds lson lsrc lsso lssr nbbc nbbo nbcc nbco nbcs ncbc ncbs nccc nccn nccr nccs ncdc ncdn ncdr ncds nclc ncln nclr ncnc ncnd ncoc ncor ncos ncrc ncsc ncsl ncss ndcc ndcs nddb nddo ndls ndoc ndor ndos ndrc ndsl ndss nlcc nlcs nlls nlrb nlsc nndb nnls nnnn nnos nnsl nnss nobc nobo