-er -ol bbb bbd bbe bbf bbi bbk bbl bbo bbr bdb bdd bde bdf bdi bdk bdl bdo bdr be- beb bed bee bef bei bek bel beo ber bfb bfd bfe bff bfi bfl bfo bfr bi- bib bid bie bif bii bik bil bio bir bkb bke bkf bkk bkl bko bkr blb bld ble blf bli blk bll blo blr bob bod boe bof boi bok bol boo bor brb brd bre brf bri brk brl bro brr dbb dbd dbe dbf dbi dbk dbl dbo dbr ddb ddd dde ddf ddi ddk ddl ddo ddr de- deb ded dee def dei dek del deo der dfb dfd dfe dff dfi dfk dfl dfo dfr di- dib did die dif dii dik dil dio dir dkb dke dki dkk dkl dko dkr dl- dlb dld dle dlf dli dlk dll dlo dlr dob dod doe dof doi dok dol doo dor drb drd dre dri drk drl dro drr ebb ebd ebe ebf ebi ebk ebl ebo ebr ed- edb edd ede edf edi edk edl edo edr eeb eed eee eef eek eel eeo eer ef- efb efd efe eff efi efl efo efr eib eid eie eif eii eik eil eio eir ekb ekd eke ekf eki ekl eko ekr elb eld ele elf eli elk ell elo elr eo- eob eod eoe eof eoi eok eol eoo eor erb erd ere erf eri erk erl ero err fbb fbd fbe fbf fbi fbk fbl fbo fbr fdb fdd fde fdf fdi fdk fdl fdo fdr feb fed fee fef fei fek fel feo fer ffd ffe fff ffi ffk ffl ffo ffr fib fid fie fif fii fik fil fir fkb fkf fki fkk fkl flb fld fle flf fli fll flo flr fob foe fof foi fok fol foo for frb frd fre frf fri frk frl fro frr i-d i-f ibb ibd ibe ibf ibi ibk ibl ibo ibr idb idd ide idf idi idk idl ido idr ie- ied iee ief iei iek iel ier ifb ifd ife iff ifi ifl ifo ifr iib iid iie iif iii iil iio iir ikb ike ikf iki ikk ikl iko ikr il- ilb ild ile ilf ili ilk ill ilo ilr io- iob iod ioe iof ioi iol ioo ior ir- irb ird ire irf iri irk irl iro irr kbb kbd kbe kbf kbi kbk kbl kbo kbr kdb kde kdf kdk kdl kdo kdr ke- keb ked kee kef kei kek kel keo ker kfd kff kfi kfo kib kid kie kif kii kik kil kio kir kkb kke kki kkk kkl kkr kl- klb kld klf kli klo klr kob kod koe kof koi kok kol koo kor krd krf kri krk krl kro krr lbb lbd lbe lbf lbi lbk lbl lbo lbr ldb ldd lde ldf ldi ldk ldl ldo ldr leb led lee lef lei lek lel leo ler lfb lfd lfe lff lfi lfk lfl lfo lfr lib lid lie lif lii lik lil lio lir lkb lkl lkr llb lld lle llf lli llk lll llo llr lob lod loe lof loi lok lol loo lor lrb lrd lrf lri lrk lro lrr o-i ob- obb obd obe obf obi obk obl obo obr odb odd ode odf odi odl odo odr oeb oed oee oef oei oel oeo oer of- ofb ofd ofe off ofi ofl ofo ofr oib oid oie oif oii oik oil oio oir okb okd oke oki okk okl oko okr olb old ole olf oli olk oll olo oo- oob ood oof ooi ook ool ooo oor or- orb ord ore orf ori ork orl oro orr rbb rbd rbe rbf rbi rbk rbl rbo rbr rdb rdd rde rdf rdi rdl rdo rdr re- reb red ree ref rei rek rel reo rer rfb rfd rfe rff rfi rfk rfl rfo rfr rib rid rie rif rii rik ril rio rir rkb rke rkf rkk rko rld rle rlf rli rll rlo rlr rob rod roe rof roi rok rol roo ror rrb rrd rrf rri rrk rrl rrr