-er -ol bbb bbd bbe bbl bbm bbo bbr bbt bdb bdd bde bdl bdm bdo bdr bdt be- beb bed bee bel bem beo ber bet blb bld ble bll blm blo blr blt bmb bmd bme bml bmm bmo bmr bmt bob bod boe bol bom boo bor bot brb brd bre brl brm bro brr brt btb btd bte btl btm bto btr btt dbb dbd dbe dbl dbm dbo dbr dbt ddb ddd dde ddl ddm ddo ddr ddt de- deb ded dee del dem deo der det dl- dlb dld dle dll dlm dlo dlr dlt dmb dmd dme dml dmm dmo dmr dmt dob dod doe dol dom doo dor dot drb drd dre drl drm dro drr drt dtb dtd dte dtl dtm dto dtr dtt ebb ebd ebe ebl ebm ebo ebr ebt ed- edb edd ede edl edm edo edr edt eeb eed eee eel eem eeo eer eet elb eld ele ell elm elo elr elt em- emb emd eme eml emm emo emr emt eo- eob eod eoe eol eom eoo eor eot erb erd ere erl erm ero err ert etb etd ete etl etm eto etr ett lbb lbd lbe lbl lbm lbo lbr lbt ldb ldd lde ldl ldm ldo ldr ldt leb led lee lel lem leo ler let llb lld lle lll llm llo llr llt lmb lmd lme lml lmm lmo lmr lmt lob lod loe lol lom loo lor lot lrb lrd lrm lro lrr lrt ltb ltd lte ltl ltm lto ltr ltt m-o m-r mbb mbd mbe mbl mbm mbo mbr mbt mdb mdd mde mdl mdm mdo mdr mdt meb med mee mel mem meo mer met mlb mld mle mll mlm mlo mlr mlt mmb mmd mme mml mmm mmo mmr mmt mob mod moe mol mom moo mor mot mrb mrd mre mrl mrm mro mrr mrt mtb mtd mte mtl mtm mto mtr mtt ob- obb obd obe obl obm obo obr obt odb odd ode odl odm odo odr odt oeb oed oee oel oem oeo oer oet olb old ole oll olm olo olt om- omb omd ome oml omm omo omr omt oo- oob ood ool oom ooo oor oot or- orb ord ore orl orm oro orr ort ot- otb otd ote otl otm oto otr ott rbb rbd rbe rbl rbm rbo rbr rbt rdb rdd rde rdl rdm rdo rdr rdt re- reb red ree rel rem reo rer ret rld rle rll rlm rlo rlr rlt rmb rmd rme rml rmm rmo rmr rmt rob rod roe rol rom roo ror rot rrb rrd rrl rrm rrr rrt rtb rtd rte rtl rtm rto rtr rtt tbb tbd tbe tbl tbm tbo tbr tbt tdb tdd tde tdl tdm tdo tdr tdt te- teb ted tee tel tem teo ter tet tld tle tll tlm tlo tlr tlt tmb tmd tme tml tmm tmo tmr tmt to- tob tod toe tol tom too tor tot trb trd tre trl trm tro trr trt ttb ttd tte ttl ttm tto ttr ttt