-er bbb bbd bbe bbf bbm bbo bbr bbt bdb bdd bde bdf bdm bdo bdr bdt be- beb bed bee bef bem beo ber bet bfb bfd bfe bff bfm bfo bfr bft bmb bmd bme bmf bmm bmo bmr bmt bob bod boe bof bom boo bor bot brb brd bre brf brm bro brr brt btb btd bte btf btm bto btr btt dbb dbd dbe dbf dbm dbo dbr dbt ddb ddd dde ddf ddm ddo ddr ddt de- deb ded dee def dem deo der det dfb dfd dfe dff dfm dfo dfr dft dmb dmd dme dmf dmm dmo dmr dmt dob dod doe dof dom doo dor dot drb drd dre drm dro drr drt dtb dtd dte dtf dtm dto dtr dtt ebb ebd ebe ebf ebm ebo ebr ebt ed- edb edd ede edf edm edo edr edt eeb eed eee eef eem eeo eer eet ef- efb efd efe eff efm efo efr eft em- emb emd eme emf emm emo emr emt eo- eob eod eoe eof eom eoo eor eot erb erd ere erf erm ero err ert etb etd ete etf etm eto etr ett fbb fbd fbe fbf fbm fbo fbr fbt fdb fdd fde fdf fdm fdo fdr fdt feb fed fee fef fem feo fer fet ffd ffe fff ffm ffo ffr fft fmb fmd fme fmf fmm fmo fmr fmt fob foe fof fom foo for fot frb frd fre frf frm fro frr frt ftb ftd fte ftf ftm fto ftr ftt m-f m-o m-r mbb mbd mbe mbf mbm mbo mbr mbt mdb mdd mde mdf mdm mdo mdr mdt meb med mee mef mem meo mer met mfb mfd mfe mff mfm mfo mfr mft mmb mmd mme mmf mmm mmo mmr mmt mob mod moe mof mom moo mor mot mrb mrd mre mrf mrm mro mrr mrt mtb mtd mte mtf mtm mto mtr mtt ob- obb obd obe obf obm obo obr obt odb odd ode odf odm odo odr odt oeb oed oee oef oem oeo oer oet of- ofb ofd ofe off ofm ofo ofr oft om- omb omd ome omf omm omo omr omt oo- oob ood oof oom ooo oor oot or- orb ord ore orf orm oro orr ort ot- otb otd ote otf otm oto otr ott rbb rbd rbe rbf rbm rbo rbr rbt rdb rdd rde rdf rdm rdo rdr rdt re- reb red ree ref rem reo rer ret rfb rfd rfe rff rfm rfo rfr rft rmb rmd rme rmf rmm rmo rmr rmt rob rod roe rof rom roo ror rot rrb rrd rrf rrm rrr rrt rtb rtd rte rtf rtm rto rtr rtt tbb tbd tbe tbf tbm tbo tbr tbt tdb tdd tde tdf tdm tdo tdr tdt te- teb ted tee tef tem teo ter tet tfb tfd tfe tff tfm tfo tfr tft tmb tmd tme tmf tmm tmo tmr tmt to- tob tod toe tof tom too tor tot trb trd tre trf trm tro trr trt ttb ttd tte ttf ttm tto ttr ttt