-er a-a a-c a-t aaa aac aad aae aao aar aat aau aax ac- aca acc acd ace aco acr act acu acx ad- ada adc add ade ado adr adt adu adx aea aec aed aee aeo aer aet aeu aex aoa aoc aod aoe aoo aor aot aou aox ar- ara arc ard are aro arr art aru arx at- ata atc atd ate ato atr att atu atx au- aua auc aud aue auo aur aut aux ax- axa axe axo axr axt axx c-- caa cac cad cae cao car cat cau cax cca ccc ccd cce cco ccr cct ccu ccx cda cdc cdd cde cdo cdr cdt cdu cdx ce- cea cec ced cee ceo cer cet ceu cex co- coa coc cod coe coo cor cot cou cox cra crc crd cre cro crr crt cru crx cta ctc ctd cte cto ctr ctt ctu ctx cua cuc cud cue cuo cur cut cuu cxc cxo cxr cxt cxx daa dac dad dae dao dar dat dau dax dca dcc dcd dce dco dcr dct dcu dcx dda ddc ddd dde ddo ddr ddt ddu ddx de- dea dec ded dee deo der det deu dex doa doc dod doe doo dor dot dou dox dra drc drd dre dro drr drt dru drx dta dtc dtd dte dto dtr dtt dtu dtx dua duc dud due duo dur dut dux dxc dxd dxo dxr dxt dxx eaa eac ead eae eao ear eat eau eax ec- eca ecc ecd ece eco ecr ect ecu ecx ed- eda edc edd ede edo edr edt edu edx eea eec eed eee eeo eer eet eex eo- eoa eoc eod eoe eoo eor eot eou era erc erd ere ero err ert eru eta etc etd ete eto etr ett etu etx eu- eua euc eud eue eur eut eux ex- exa exc exd exe exo exr ext exu exx oaa oac oad oae oao oar oat oau oax oc- oca occ ocd oco ocr oct ocu ocx oda odc odd ode odo odr odt odu oea oec oed oee oeo oer oet oex oo- ooa ooc ood ooo oor oot oox or- ora orc ord ore oro orr ort oru orx ot- ota otc otd ote oto otr ott otu ou- oua ouc oud oue ouo our out ox- oxa oxc oxo oxt oxx ra- raa rac rad rae rao rar rat rau rax rca rcc rcd rce rco rcr rct rcu rcx rda rdc rdd rde rdo rdr rdt rdu rdx re- rea rec red ree reo rer ret reu rex roa roc rod roe roo ror rot rou rox rra rrc rrd rrr rrt rru rta rtc rtd rte rto rtr rtt rtu rtx rua ruc rud rue ruo rur rut ruu rux rxr t-x taa tac tad tae tao tar tat tau tax tca tcc tcd tce tco tcr tct tcu tcx tda tdc tdd tde tdo tdr tdt tdu tdx te- tea tec ted tee teo ter tet teu tex to- toa toc tod toe too tor tot tou tox tra trc trd tre tro trr trt tru trx tta ttc ttd tte tto ttr ttt ttu ttx tua tuc tud tue tuo tur tut tuu tux txe txt txu ua- uaa uac uad uae uao uar uat uau uca ucc ucd uce uco ucr uct ucu uda udc udd ude udo udr udt udu udx uea uec ued uee uer uet uoa uoc uod uoe uoo uor uot uox ur- ura urc urd ure uro urr urt uru urx uta utc utd ute uto utr utt utu utx uua uuc uue uur uut uuu uxc uxo uxr uxt uxu xaa xac xad xar xat xau xcd xcr xcx xda xdc xde xdr xdt xed xee xer xet xeu xex xoa xoc xod xoo xor xot xox xrc xrd xrt xrx xtc xtr xtx xue xxo xxx