-er -ol b-u bbb bbd bbe bbk bbl bbm bbo bbr bbs bbt bbu bdb bdd bde bdk bdl bdm bdo bdr bds bdt bdu be- beb bed bee bek bel bem beo ber bes bet beu bkb bke bkk bkl bkm bko bkr bks bkt blb bld ble blk bll blm blo blr bls blt blu bmb bmd bme bmk bml bmm bmo bmr bms bmt bmu bob bod boe bok bol bom boo bor bos bot bou brb brd bre brk brl brm bro brr brs brt bru bsb bsd bse bsk bsl bsm bso bsr bss bst bsu btb btd bte btk btl btm bto btr bts btt btu bub bud bue buk bul bum buo bur bus but buu dbb dbd dbe dbk dbl dbm dbo dbr dbs dbt dbu ddb ddd dde ddk ddl ddm ddo ddr dds ddt ddu de- deb ded dee dek del dem deo der des det deu dkb dke dkk dkl dkm dko dkr dks dkt dku dl- dlb dld dle dlk dll dlm dlo dlr dls dlt dlu dmb dmd dme dmk dml dmm dmo dmr dms dmt dmu dob dod doe dok dol dom doo dor dos dot dou drb drd dre drk drl drm dro drr drs drt dru dsb dsd dse dsk dsl dsm dso dsr dss dst dsu dtb dtd dte dtk dtl dtm dto dtr dts dtt dtu dub dud due duk dul dum duo dur dus dut ebb ebd ebe ebk ebl ebm ebo ebr ebs ebt ebu ed- edb edd ede edk edl edm edo edr eds edt edu eeb eed eee eek eel eem eeo eer ees eet ekb ekd eke ekl eko ekr eks ekt eku elb eld ele elk ell elm elo elr els elt elu em- emb emd eme emk eml emm emo emr ems emt emu eo- eob eod eoe eok eol eom eoo eor eos eot eou erb erd ere erk erl erm ero err ers ert eru es- esb esd ese esk esl esm eso esr ess est esu etb etd ete etk etl etm eto etr ets ett etu eu- eub eud eue eul eur eus eut k-t kbb kbd kbe kbk kbl kbm kbo kbr kbs kbu kdb kde kdk kdl kdm kdo kdr kds kdt kdu ke- keb ked kee kek kel kem keo ker kes ket kkb kke kkk kkl kkm kkr kks kkt kku kl- klb kld klm klo klr kls klt klu kmb kmd kme kmk kml kmm kmo kms kmt kmu kob kod koe kok kol kom koo kor kos kot kou krd krk krl kro krr krs krt kru ksb ksd kse ksk ksl ksm kso ksr kss kst ksu ktb kte ktk ktl ktm kto ktr kts ktt ktu kub kud kue kuk kul kum kur kus kut kuu lbb lbd lbe lbk lbl lbm lbo lbr lbs lbt lbu ldb ldd lde ldk ldl ldm ldo ldr lds ldt ldu leb led lee lek lel lem leo ler les let leu lkb lkl lkr lks lkt llb lld lle llk lll llm llo llr lls llt llu lmb lmd lme lmk lml lmm lmo lmr lms lmt lmu lob lod loe lok lol lom loo lor los lot lou lrb lrd lrk lrm lro lrr lrs lrt lru lsb lsd lse lsk lsl lsm lso lsr lss lst lsu ltb ltd lte ltk ltl ltm lto ltr lts ltt ltu lub lud lue luk lul lum luo lur lus lut luu m-o m-r mbb mbd mbe mbk mbl mbm mbo mbr mbs mbt mbu mdb mdd mde mdk mdl mdm mdo mdr mds mdt mdu meb med mee mek mel mem meo mer mes met meu mkb mkd mke mkk mkl mkm mko mkr mks mkt mku mlb mld mle mlk mll mlm mlo mlr mls mlt mlu mmb mmd mme mmk mml mmm mmo mmr mms mmt mmu mob mod moe mok mol mom moo mor mos mot mou mrb mrd mre mrk mrl mrm mro mrr mrs mrt mru msb msd mse msk msl msm mso msr mss mst msu mtb mtd mte mtk mtl mtm mto mtr mts mtt mtu mub mud mue muk mul mum mur mus mut muu ob- obb obd obe obk obl obm obo obr obs obt obu odb odd ode odl odm odo odr ods odt odu oeb oed oee oel oem oeo oer oes oet okb okd oke okk okl oko okr oks oku olb old ole olk oll olm olo ols olt olu om- omb omd ome oml omm omo omr oms omt omu oo- oob ood ook ool oom ooo oor oos oot or- orb ord ore ork orl orm oro orr ors ort oru os- osb osd ose osk osl osm oso osr oss ost osu ot- otb otd ote otk otl otm oto otr ots ott otu ou- oud oue ouk oul oum ouo our ous out rbb rbd rbe rbk rbl rbm rbo rbr rbs rbt rbu rdb rdd rde rdl rdm rdo rdr rds rdt rdu re- reb red ree rek rel rem reo rer res ret reu rkb rke rkk rkm rko rks rkt rku rld rle rll rlm rlo rlr rls rlt rlu rmb rmd rme rml rmm rmo rmr rms rmt rob rod roe rok rol rom roo ror ros rot rou rrb rrd rrk rrl rrm rrr rrs rrt rru rsb rsd rse rsk rsl rsm rso rsr rss rst rsu rtb rtd rte rtk rtl rtm rto rtr rts rtt rtu rub rud rue ruk rum ruo rur rus rut ruu sbb sbd sbe sbk sbl sbm sbo sbr sbs sbt sbu sdb sdd sde sdk sdl sdm sdo sdr sds sdt sdu se- seb sed see sek sel sem seo ser ses set seu sk- skb skd ske skk skl skm sko skr sks skt sku slb sld sle slk sll slm slo slr sls slt slu smb smd sme smk sml smm smo