-er bbb bbd bbe bbi bbm bbo bbr bbs bbx bdb bdd bde bdi bdm bdo bdr bds bdx be- beb bed bee bei bem beo ber bes bex bi- bib bid bie bii bim bio bir bis bix bmb bmd bme bmi bmm bmo bmr bms bmx bob bod boe boi bom boo bor bos box brb brd bre bri brm bro brr brs brx bsb bsd bse bsi bsm bso bsr bss bsx bxb bxd bxi bxm bxo bxx dbb dbd dbe dbi dbm dbo dbr dbs dbx ddb ddd dde ddi ddm ddo ddr dds ddx de- deb ded dee dei dem deo der des dex di- dib did die dii dim dio dir dis dix dmb dmd dme dmi dmm dmo dmr dms dmx dob dod doe doi dom doo dor dos dox drb drd dre dri drm dro drr drs drx dsb dsd dse dsi dsm dso dsr dss dsx dxd dxi dxo dxr dxs dxx ebb ebd ebe ebi ebm ebo ebr ebs ebx ed- edb edd ede edi edm edo edr eds edx eeb eed eee eem eeo eer ees eex eib eid eie eii eim eio eir eis eix em- emb emd eme emi emm emo emr ems emx eo- eob eod eoe eoi eom eoo eor eos erb erd ere eri erm ero err ers es- esb esd ese esi esm eso esr ess esx ex- exd exe exi exo exr exs exx i-d ibb ibd ibe ibi ibm ibo ibr ibs ibx idb idd ide idi idm ido idr ids idx ie- ied iee iei iem ier ies iex iib iid iie iii iim iio iir iis iix im- imb imd ime imi imm imo ims imx io- iob iod ioe ioi iom ioo ior ios ir- irb ird ire iri irm iro irr irs irx is- isb isd ise isi ism iso isr iss ixe ixi m-o m-r mbb mbd mbe mbi mbm mbo mbr mbs mbx mdb mdd mde mdi mdm mdo mdr mds mdx meb med mee mei mem meo mer mes mex mi- mib mid mie mii mim mio mir mis mix mmb mmd mme mmi mmm mmo mmr mms mmx mob mod moe moi mom moo mor mos mox mrb mrd mre mri mrm mro mrr mrs mrx msb msd mse msi msm mso msr mss msx mxd mxi mxr mxs o-i ob- obb obd obe obi obm obo obr obs obx odb odd ode odi odm odo odr ods oeb oed oee oei oem oeo oer oes oex oib oid oie oii oim oio oir ois om- omb omd ome omi omm omo omr oms omx oo- oob ood ooi oom ooo oor oos oox or- orb ord ore ori orm oro orr ors orx os- osb osd ose osi osm oso osr oss osx ox- oxb oxi oxo oxx rbb rbd rbe rbi rbm rbo rbr rbs rbx rdb rdd rde rdi rdm rdo rdr rds rdx re- reb red ree rei rem reo rer res rex rib rid rie rii rim rio rir ris rix rmb rmd rme rmi rmm rmo rmr rms rmx rob rod roe roi rom roo ror ros rox rrb rrd rri rrm rrr rrs rsb rsd rse rsi rsm rso rsr rss rsx rxr rxs sbb sbd sbe sbi sbm sbo sbr sbs sbx sdb sdd sde sdi sdm sdo sdr sds se- seb sed see sei sem seo ser ses sex sib sid sie sii sim sio sir sis six smb smd sme smi smm smo smr sms smx sob sod soe soi som soo sor sos sox sr- srb srd sre sri srm sro srr srs srx ss- ssb ssd sse ssi ssm sso ssr sss ssx sxi sxm sxs xbe xbr xbx xdb xde xdi xdm xdr xds xed xee xem xer xes xex xie xii xio xis xix xmd xmi xmm xmo xmr xms xmx xod xoi xom xoo xor xos xox xrd xrx xsb xsi xsm xss xxi xxo xxx