-er a-a a-c a-t aaa aac aae aao aar aat aau aav ac- aca acc ace aco acr act acu acv aea aec aee aeo aer aet aeu aev aoa aoc aoe aoo aor aot aou aov ar- ara arc are aro arr art aru arv at- ata atc ate ato atr att atu atv au- aua auc aue auo aur aut auv av- ava avc ave avo avr avt avu c-- caa cac cae cao car cat cau cav cca ccc cce cco ccr cct ccu ccv ce- cea cec cee ceo cer cet ceu cev co- coa coc coe coo cor cot cou cov cra crc cre cro crr crt cru crv cta ctc cte cto ctr ctt ctu ctv cua cuc cue cuo cur cut cuu cuv cva cvc cve cvo cvr cvt cvu cvv eaa eac eae eao ear eat eau eav ec- eca ecc ece eco ecr ect ecu ecv eea eec eee eeo eer eet eev eo- eoa eoc eoe eoo eor eot eou era erc ere ero err ert eru erv eta etc ete eto etr ett etu etv eu- eua euc eue eur eut euv eva evc eve evo evr evt evv oaa oac oae oao oar oat oau oav oc- oca occ oco ocr oct ocu ocv oea oec oee oeo oer oet oo- ooa ooc ooo oor oot oov or- ora orc ore oro orr ort oru orv ot- ota otc ote oto otr ott otu otv ou- oua ouc oue ouo our out ov- ova ovc ove ovo ovv ra- raa rac rae rao rar rat rau rav rca rcc rce rco rcr rct rcu rcv re- rea rec ree reo rer ret reu rev roa roc roe roo ror rot rou rov rra rrc rrr rrt rru rta rtc rte rto rtr rtt rtu rtv rua ruc rue ruo rur rut ruu ruv rva rvc rve rvo rvr rvt rvu rvv taa tac tae tao tar tat tau tav tca tcc tce tco tcr tct tcu tcv te- tea tec tee teo ter tet teu tev to- toa toc toe too tor tot tou tov tra trc tre tro trr trt tru trv tta ttc tte tto ttr ttt ttu ttv tua tuc tue tuo tur tut tuu tuv tva tvc tve tvo tvr tvt tvu ua- uaa uac uae uao uar uat uau uav uca ucc uce uco ucr uct ucu ucv uea uec uee uer uet uoa uoc uoe uoo uor uot ur- ura urc ure uro urr urt uru uta utc ute uto utr utt utu utv uua uuc uue uur uut uuu uva uvc uve uvo uvu uvv v-a v-e vaa vac vae vao var vat vau vav vca vcc vce vco vcr vct vcu vea vec vee veo ver vet veu voa voc voe voo vor vot vou vov vra vrc vre vrr vrt vru vta vtc vte vto vtr vtt vtu vtv vue vur vut vuv vva vvc vvo vvr vvt vvv