-er a-a a-b a-i a-t aaa aab aad aae aaf aai aao aar aas aat aau aax ab- aba abb abd abe abf abi abo abr abs abt abu abx ad- ada adb add ade adf adi ado adr ads adt adu adx aea aeb aed aee aef aei aeo aer aes aet aeu aex af- afa afb afd afe aff afi afo afr afs aft afu afx ai- aia aib aid aie aif aii aio air ais ait aiu aix aoa aob aod aoe aof aoi aoo aor aos aot aou aox ar- ara arb ard are arf ari aro arr ars art aru arx as- asa asb asd ase asf asi aso asr ass ast asu asx at- ata atb atd ate atf ati ato atr ats att atu atx au- aua aub aud aue auf aui auo aur aus aut aux ax- axa axe axi axo axr axs axt axx b-u baa bab bad bae baf bai bao bar bas bat bau bax bba bbb bbd bbe bbf bbi bbo bbr bbs bbt bbu bbx bda bdb bdd bde bdf bdi bdo bdr bds bdt bdu bdx be- bea beb bed bee bef bei beo ber bes bet beu bex bfa bfb bfd bfe bff bfi bfo bfr bfs bft bfu bfx bi- bia bib bid bie bif bii bio bir bis bit biu bix boa bob bod boe bof boi boo bor bos bot bou box bra brb brd bre brf bri bro brr brs brt bru brx bsa bsb bsd bse bsf bsi bso bsr bss bst bsu bsx bta btb btd bte btf bti bto btr bts btt btu btx bua bub bud bue buf bui buo bur bus but buu bux bxb bxd bxi bxo bxx daa dab dad dae daf dai dao dar das dat dau dax dba dbb dbd dbe dbf dbi dbo dbr dbs dbt dbu dbx dda ddb ddd dde ddf ddi ddo ddr dds ddt ddu ddx de- dea deb ded dee def dei deo der des det deu dex dfa dfb dfd dfe dff dfi dfo dfr dfs dft dfu dfx di- dia dib did die dif dii dio dir dis dit diu dix doa dob dod doe dof doi doo dor dos dot dou dox dra drb drd dre dri dro drr drs drt dru drx dsa dsb dsd dse dsf dsi dso dsr dss dst dsu dsx dta dtb dtd dte dtf dti dto dtr dts dtt dtu dtx dua dub dud due duf dui duo dur dus dut dux dxd dxi dxo dxr dxs dxt dxx eaa eab ead eae eaf eai eao ear eas eat eau eax eba ebb ebd ebe ebf ebi ebo ebr ebs ebt ebu ebx ed- eda edb edd ede edf edi edo edr eds edt edu edx eea eeb eed eee eef eeo eer ees eet eex ef- efa efb efd efe eff efi efo efr efs eft efx eia eib eid eie eif eii eio eir eis eit eiu eix eo- eoa eob eod eoe eof eoi eoo eor eos eot eou era erb erd ere erf eri ero err ers ert eru es- esa esb esd ese esf esi eso esr ess est esu esx eta etb etd ete etf eti eto etr ets ett etu etx eu- eua eub eud eue euf eui eur eus eut eux ex- exa exd exe exi exo exr exs ext exu exx faa fab fad fae faf fai fao far fas fat fau fax fba fbb fbd fbe fbf fbi fbo fbr fbs fbt fbu fbx fda fdb fdd fde fdf fdi fdo fdr fds fdt fdu fdx fea feb fed fee fef fei feo fer fes fet feu fex ffa ffd ffe fff ffi ffo ffr ffs fft ffu ffx fia fib fid fie fif fii fir fis fit fiu fix foa fob foe fof foi foo for fos fot fou fox fra frb frd fre frf fri fro frr frs frt fru fsa fsb fsd fse fsf fsi fso fsr fss fst fsu fsx fta ftb ftd fte ftf fti fto ftr fts ftt ftu ftx fua fub fud fue fuf fui fuo fur fus fut fuu fux fxe fxi fxr fxs fxt fxu fxx i-d i-f ia- iaa iab iad iae iaf iai iao iar ias iat iau iba ibb ibd ibe ibf ibi ibo ibr ibs ibt ibu ibx ida idb idd ide idf idi ido idr ids idt idu idx ie- iea ied iee ief iei ier ies iet iex ifa ifb ifd ife iff ifi ifo ifr ifs ift ifu ifx iia iib iid iie iif iii iio iir iis iit iiu iix io- ioa iob iod ioe iof ioi ioo ior ios iot iou ir- ira irb ird ire irf iri iro irr irs irt iru irx is- isa isb isd ise isf isi iso isr iss ist isu ita itb itd ite itf iti ito its itt itu itx iu- iua iub iud iue iui iur ius iut ixe ixi o-i oaa oab oad oae oaf oai oao oar oas oat oau oax ob- oba obb obd obe obf obi obo obr obs obt obu obx oda odb odd ode odf odi odo odr ods odt odu oea oeb oed oee oef oei oeo oer oes oet oex of- ofa ofb ofd ofe off ofi ofo ofr ofs oft ofu ofx oia oib oid oie oif oii oio oir ois oit oiu oo- ooa oob ood oof ooi ooo oor oos oot oox or- ora orb ord ore orf ori oro orr ors ort oru orx os- osa osb osd ose osf osi oso osr oss ost osu osx ot- ota otb otd ote otf oti oto otr ots ott otu ou- oua oud oue ouf oui ouo our ous out ox- oxa oxb oxf oxi oxo oxt oxx ra- raa rab rad rae raf rai rao rar ras rat rau rax rba rbb rbd rbe rbf rbi rbo rbr rbs