-er -ol b-u bbb bbd bbe bbk bbl bbn bbo bbr bbs bbt bbu bdb bdd bde bdk bdl bdo bdr bds bdt bdu be- beb bed bee bek bel ben beo ber bes bet beu bkb bke bkk bkl bkn bko bkr bks bkt blb bld ble blk bll bln blo blr bls blt blu bnb bnd bne bnk bnl bnn bno bnr bns bnt bnu bob bod boe bok bol bon boo bor bos bot bou brb brd bre brk brl brn bro brr brs brt bru bsb bsd bse bsk bsl bsn bso bsr bss bst bsu btb btd bte btk btl btn bto btr bts btt btu bub bud bue buk bul bun buo bur bus but buu dbb dbd dbe dbk dbl dbn dbo dbr dbs dbt dbu ddb ddd dde ddk ddl ddn ddo ddr dds ddt ddu de- deb ded dee dek del den deo der des det deu dkb dke dkk dkl dko dkr dks dkt dku dl- dlb dld dle dlk dll dlo dlr dls dlt dlu dnb dnd dne dnk dnl dnn dno dnr dns dnt dob dod doe dok dol don doo dor dos dot dou drb drd dre drk drl drn dro drr drs drt dru dsb dsd dse dsk dsl dsn dso dsr dss dst dsu dtb dtd dte dtk dtl dtn dto dtr dts dtt dtu dub dud due duk dul dun duo dur dus dut ebb ebd ebe ebk ebl ebn ebo ebr ebs ebt ebu ed- edb edd ede edk edl edn edo edr eds edt edu eeb eed eee eek eel een eeo eer ees eet ekb ekd eke ekl eko ekr eks ekt eku elb eld ele elk ell eln elo elr els elt elu en- enb end ene enk enl enn eno enr ens ent enu eo- eob eod eoe eok eol eon eoo eor eos eot eou erb erd ere erk erl ern ero err ers ert eru es- esb esd ese esk esl esn eso esr ess est esu etb etd ete etk etl etn eto etr ets ett etu eu- eub eud eue eul eun eur eus eut k-t kbb kbd kbe kbk kbl kbn kbo kbr kbs kbu kdb kde kdk kdl kdo kdr kds kdt kdu ke- keb ked kee kek kel ken keo ker kes ket kkb kke kkk kkl kkn kkr kks kkt kku kl- klb kld klo klr kls klt klu kn- knd kne knk knl knn kno knr knt knu kob kod koe kok kol kon koo kor kos kot kou krd krk krl krn kro krr krs krt kru ksb ksd kse ksk ksl ksn kso ksr kss kst ksu ktb kte ktk ktl ktn kto ktr kts ktt ktu kub kud kue kuk kul kun kur kus kut kuu lbb lbd lbe lbk lbl lbo lbr lbs lbt lbu ldb ldd lde ldk ldl ldn ldo ldr lds ldt ldu leb led lee lek lel len leo ler les let leu lkb lkl lkr lks lkt llb lld lle llk lll lln llo llr lls llt llu lnb lnd lne lnk lnl lnn lno lnr lns lnt lnu lob lod loe lok lol lon loo lor los lot lou lrb lrd lrk lrn lro lrr lrs lrt lru lsb lsd lse lsk lsl lsn lso lsr lss lst lsu ltb ltd lte ltk ltl lto ltr lts ltt ltu lub lud lue luk lul lun luo lur lus lut luu nbb nbd nbe nbk nbl nbn nbo nbr nbs nbt nbu ndb ndd nde ndk ndl ndn ndo ndr nds ndt ndu ne- neb ned nee nek nel nen neo ner nes net neu nke nkk nkn nko nkr nks nkt nku nlb nld nle nlk nll nln nlo nlr nls nlt nlu nnb nne nnk nnl nnn nno nns nnt nnu no- nob nod noe nok nol non noo nor nos not nou nrb nrd nre nrk nrl nrn nro nrr nrs nrt nru nsb nsd nse nsk nsl nsn nso nsr nss nst nsu ntb ntd nte ntk ntn nto ntr nts ntt ntu nub nud nue nuk nul nun nuo nur nus nut nuu ob- obb obd obe obk obl obn obo obr obs obt obu odb odd ode odl odn odo odr ods odt odu oeb oed oee oel oen oeo oer oes oet okb okd oke okk okl oko okr oks oku olb old ole olk oll oln olo ols olt olu on- onb ond one onk onl onn ono onr ons ont onu oo- oob ood ook ool oon ooo oor oos oot or- orb ord ore ork orl orn oro orr ors ort oru os- osb osd ose osk osl osn oso osr oss ost osu ot- otb otd ote otk otl otn oto otr ots ott otu ou- oud oue ouk oul oun ouo our ous out rbb rbd rbe rbk rbl rbn rbo rbr rbs rbt rbu rdb rdd rde rdl rdn rdo rdr rds rdt rdu re- reb red ree rek rel ren reo rer res ret reu rkb rke rkk rko rks rkt rku rld rle rll rln rlo rlr rls rlt rlu rnb rnd rnn rno rnr rns rnt rnu rob rod roe rok rol ron roo ror ros rot rou rrb rrd rrk rrl rrn rrr rrs rrt rru rsb rsd rse rsk rsl rsn rso rsr rss rst rsu rtb rtd rte rtk rtl rtn rto rtr rts rtt rtu rub rud rue ruk run ruo rur rus rut ruu sbb sbd sbe sbk sbl sbn sbo sbr sbs sbt sbu sdb sdd sde sdk sdl sdn sdo sdr sds sdt sdu se- seb sed see sek sel sen seo ser ses set seu sk- skb skd ske skk skl sko skr sks skt sku slb sld sle slk sll sln slo slr sls slt slu snb snd sne snk snl snn sno snr sns snt snu sob sod soe sok sol son soo sor sos