-er bbb bbd bbe bbi bbm bbo bbr bbx bdb bdd bde bdi bdm bdo bdr bdx be- beb bed bee bei bem beo ber bex bi- bib bid bie bii bim bio bir bix bmb bmd bme bmi bmm bmo bmr bmx bob bod boe boi bom boo bor box brb brd bre bri brm bro brr brx bxb bxd bxi bxm bxo bxx dbb dbd dbe dbi dbm dbo dbr dbx ddb ddd dde ddi ddm ddo ddr ddx de- deb ded dee dei dem deo der dex di- dib did die dii dim dio dir dix dmb dmd dme dmi dmm dmo dmr dmx dob dod doe doi dom doo dor dox drb drd dre dri drm dro drr drx dxd dxi dxo dxr dxx ebb ebd ebe ebi ebm ebo ebr ebx ed- edb edd ede edi edm edo edr edx eeb eed eee eem eeo eer eex eib eid eie eii eim eio eir eix em- emb emd eme emi emm emo emr emx eo- eob eod eoe eoi eom eoo eor erb erd ere eri erm ero err ex- exd exe exi exo exr exx i-d ibb ibd ibe ibi ibm ibo ibr ibx idb idd ide idi idm ido idr idx ie- ied iee iei iem ier iex iib iid iie iii iim iio iir iix im- imb imd ime imi imm imo imx io- iob iod ioe ioi iom ioo ior ir- irb ird ire iri irm iro irr irx ixe ixi m-o m-r mbb mbd mbe mbi mbm mbo mbr mbx mdb mdd mde mdi mdm mdo mdr mdx meb med mee mei mem meo mer mex mi- mib mid mie mii mim mio mir mix mmb mmd mme mmi mmm mmo mmr mmx mob mod moe moi mom moo mor mox mrb mrd mre mri mrm mro mrr mrx mxd mxi mxr o-i ob- obb obd obe obi obm obo obr obx odb odd ode odi odm odo odr oeb oed oee oei oem oeo oer oex oib oid oie oii oim oio oir om- omb omd ome omi omm omo omr omx oo- oob ood ooi oom ooo oor oox or- orb ord ore ori orm oro orr orx ox- oxb oxi oxo oxx rbb rbd rbe rbi rbm rbo rbr rbx rdb rdd rde rdi rdm rdo rdr rdx re- reb red ree rei rem reo rer rex rib rid rie rii rim rio rir rix rmb rmd rme rmi rmm rmo rmr rmx rob rod roe roi rom roo ror rox rrb rrd rri rrm rrr rxr xbe xbr xbx xdb xde xdi xdm xdr xed xee xem xer xex xie xii xio xix xmd xmi xmm xmo xmr xmx xod xoi xom xoo xor xox xrd xrx xxi xxo xxx