-er -ol bbb bbd bbe bbl bbm bbo bbr bbs bbt bdb bdd bde bdl bdm bdo bdr bds bdt be- beb bed bee bel bem beo ber bes bet blb bld ble bll blm blo blr bls blt bmb bmd bme bml bmm bmo bmr bms bmt bob bod boe bol bom boo bor bos bot brb brd bre brl brm bro brr brs brt bsb bsd bse bsl bsm bso bsr bss bst btb btd bte btl btm bto btr bts btt dbb dbd dbe dbl dbm dbo dbr dbs dbt ddb ddd dde ddl ddm ddo ddr dds ddt de- deb ded dee del dem deo der des det dl- dlb dld dle dll dlm dlo dlr dls dlt dmb dmd dme dml dmm dmo dmr dms dmt dob dod doe dol dom doo dor dos dot drb drd dre drl drm dro drr drs drt dsb dsd dse dsl dsm dso dsr dss dst dtb dtd dte dtl dtm dto dtr dts dtt ebb ebd ebe ebl ebm ebo ebr ebs ebt ed- edb edd ede edl edm edo edr eds edt eeb eed eee eel eem eeo eer ees eet elb eld ele ell elm elo elr els elt em- emb emd eme eml emm emo emr ems emt eo- eob eod eoe eol eom eoo eor eos eot erb erd ere erl erm ero err ers ert es- esb esd ese esl esm eso esr ess est etb etd ete etl etm eto etr ets ett lbb lbd lbe lbl lbm lbo lbr lbs lbt ldb ldd lde ldl ldm ldo ldr lds ldt leb led lee lel lem leo ler les let llb lld lle lll llm llo llr lls llt lmb lmd lme lml lmm lmo lmr lms lmt lob lod loe lol lom loo lor los lot lrb lrd lrm lro lrr lrs lrt lsb lsd lse lsl lsm lso lsr lss lst ltb ltd lte ltl ltm lto ltr lts ltt m-o m-r mbb mbd mbe mbl mbm mbo mbr mbs mbt mdb mdd mde mdl mdm mdo mdr mds mdt meb med mee mel mem meo mer mes met mlb mld mle mll mlm mlo mlr mls mlt mmb mmd mme mml mmm mmo mmr mms mmt mob mod moe mol mom moo mor mos mot mrb mrd mre mrl mrm mro mrr mrs mrt msb msd mse msl msm mso msr mss mst mtb mtd mte mtl mtm mto mtr mts mtt ob- obb obd obe obl obm obo obr obs obt odb odd ode odl odm odo odr ods odt oeb oed oee oel oem oeo oer oes oet olb old ole oll olm olo ols olt om- omb omd ome oml omm omo omr oms omt oo- oob ood ool oom ooo oor oos oot or- orb ord ore orl orm oro orr ors ort os- osb osd ose osl osm oso osr oss ost ot- otb otd ote otl otm oto otr ots ott rbb rbd rbe rbl rbm rbo rbr rbs rbt rdb rdd rde rdl rdm rdo rdr rds rdt re- reb red ree rel rem reo rer res ret rld rle rll rlm rlo rlr rls rlt rmb rmd rme rml rmm rmo rmr rms rmt rob rod roe rol rom roo ror ros rot rrb rrd rrl rrm rrr rrs rrt rsb rsd rse rsl rsm rso rsr rss rst rtb rtd rte rtl rtm rto rtr rts rtt sbb sbd sbe sbl sbm sbo sbr sbs sbt sdb sdd sde sdl sdm sdo sdr sds sdt se- seb sed see sel sem seo ser ses set slb sld sle sll slm slo slr sls slt smb smd sme sml smm smo smr sms smt sob sod soe sol som soo sor sos sot sr- srb srd sre srl srm sro srr srs srt ss- ssb ssd sse ssl ssm sso ssr sss sst stb std ste stl stm sto str sts stt tbb tbd tbe tbl tbm tbo tbr tbs tbt tdb tdd tde tdl tdm tdo tdr tds tdt te- teb ted tee tel tem teo ter tes tet tld tle tll tlm tlo tlr tls tlt tmb tmd tme tml tmm tmo tmr tms tmt to- tob tod toe tol tom too tor tos tot trb trd tre trl trm tro trr trs trt tsb tsd tse tsl tsm tso tsr tss tst ttb ttd tte ttl ttm tto ttr tts ttt