-er a-a a-b a-i a-t aaa aab aad aae aaf aai aao aar aat ab- aba abb abd abe abf abi abo abr abt ad- ada adb add ade adf adi ado adr adt aea aeb aed aee aef aei aeo aer aet af- afa afb afd afe aff afi afo afr aft ai- aia aib aid aie aif aii aio air ait aoa aob aod aoe aof aoi aoo aor aot ar- ara arb ard are arf ari aro arr art at- ata atb atd ate atf ati ato atr att baa bab bad bae baf bai bao bar bat bba bbb bbd bbe bbf bbi bbo bbr bbt bda bdb bdd bde bdf bdi bdo bdr bdt be- bea beb bed bee bef bei beo ber bet bfa bfb bfd bfe bff bfi bfo bfr bft bi- bia bib bid bie bif bii bio bir bit boa bob bod boe bof boi boo bor bot bra brb brd bre brf bri bro brr brt bta btb btd bte btf bti bto btr btt daa dab dad dae daf dai dao dar dat dba dbb dbd dbe dbf dbi dbo dbr dbt dda ddb ddd dde ddf ddi ddo ddr ddt de- dea deb ded dee def dei deo der det dfa dfb dfd dfe dff dfi dfo dfr dft di- dia dib did die dif dii dio dir dit doa dob dod doe dof doi doo dor dot dra drb drd dre dri dro drr drt dta dtb dtd dte dtf dti dto dtr dtt eaa eab ead eae eaf eai eao ear eat eba ebb ebd ebe ebf ebi ebo ebr ebt ed- eda edb edd ede edf edi edo edr edt eea eeb eed eee eef eeo eer eet ef- efa efb efd efe eff efi efo efr eft eia eib eid eie eif eii eio eir eit eo- eoa eob eod eoe eof eoi eoo eor eot era erb erd ere erf eri ero err ert eta etb etd ete etf eti eto etr ett faa fab fad fae faf fai fao far fat fba fbb fbd fbe fbf fbi fbo fbr fbt fda fdb fdd fde fdf fdi fdo fdr fdt fea feb fed fee fef fei feo fer fet ffa ffd ffe fff ffi ffo ffr fft fia fib fid fie fif fii fir fit foa fob foe fof foi foo for fot fra frb frd fre frf fri fro frr frt fta ftb ftd fte ftf fti fto ftr ftt i-d i-f ia- iaa iab iad iae iaf iai iao iar iat iba ibb ibd ibe ibf ibi ibo ibr ibt ida idb idd ide idf idi ido idr idt ie- iea ied iee ief iei ier iet ifa ifb ifd ife iff ifi ifo ifr ift iia iib iid iie iif iii iio iir iit io- ioa iob iod ioe iof ioi ioo ior iot ir- ira irb ird ire irf iri iro irr irt ita itb itd ite itf iti ito itt o-i oaa oab oad oae oaf oai oao oar oat ob- oba obb obd obe obf obi obo obr obt oda odb odd ode odf odi odo odr odt oea oeb oed oee oef oei oeo oer oet of- ofa ofb ofd ofe off ofi ofo ofr oft oia oib oid oie oif oii oio oir oit oo- ooa oob ood oof ooi ooo oor oot or- ora orb ord ore orf ori oro orr ort ot- ota otb otd ote otf oti oto otr ott ra- raa rab rad rae raf rai rao rar rat rba rbb rbd rbe rbf rbi rbo rbr rbt rda rdb rdd rde rdf rdi rdo rdr rdt re- rea reb red ree ref rei reo rer ret rfa rfb rfd rfe rff rfi rfo rfr rft ria rib rid rie rif rii rio rir rit roa rob rod roe rof roi roo ror rot rra rrb rrd rrf rri rrr rrt rta rtb rtd rte rtf rti rto rtr rtt taa tab tad tae taf tai tao tar tat tba tbb tbd tbe tbf tbi tbo tbr tbt tda tdb tdd tde tdf tdi tdo tdr tdt te- tea teb ted tee tef tei teo ter tet tfa tfb tfd tfe tff tfi tfo tfr tft tia tib tid tie tif tii tio tir tit to- toa tob tod toe tof toi too tor tot tra trb trd tre trf tri tro trr trt tta ttb ttd tte ttf tti tto ttr ttt

a-be a-do a-ii aaaa aaab aaad aaae aaaf aaai aaar aaba aabb aabd aabi aabt aada aade aadi aadt aaea aafa aafb aafd aaff aafi aaib aaii aaoe aaoo aara aard aare aari aaro aart aata aatf aatt abaa abab abad abae abaf abai abar abat abb- abba abbb abbe abbi abbo abbr abbt abda abdi abdo abed abee aber abet abff abia abib abid abie abir abit aboa abob abod abof aboo abor abot abra abri abro abta adaa adab adad adae adai adao adar adat adba adbi adda addd adde addi addo addr adea adeb adee adeo ader adet adfa adia adib adie adif adio adir adit adob adod adoe adoo ador adot adra adre adro adta aeaf aebi aede aedt aeer aeio aeit aer- aera aerd aeri aero aeta aetf aeto aetr aett afaa afad afao afar afat afdb afee afer afet affa affi affo afft afia afib afid afif afir afit afoa afoe afoo afor afr- afra afre afri afro afta afte aiai aiba aibo aida aidb aide aidi aidr aidt aiea aiee aiet aifd aiff aiia aiib aiid aiir aioi aira aird aire airi airo airt aita aite aitf aiti aitr aitt aoba aora aorb aort aotd aotf arab arad arae araf arai arar arat arba arbe arbi arda arde ardf ardi ardo area ared aree aref arei areo aret arfa arfb arff arft aria arib arid arie arif arii ario arit aroa arob arod aroe aroi aroo aror arr- arra arre arri