-er a-a a-c aaa aac aad aae aao aar aas aau aav ac- aca acc acd ace aco acr acs acu acv ad- ada adc add ade ado adr ads adu adv aea aec aed aee aeo aer aes aeu aev aoa aoc aod aoe aoo aor aos aou aov ar- ara arc ard are aro arr ars aru arv as- asa asc asd ase aso asr ass asu asv au- aua auc aud aue auo aur aus auv av- ava avc avd ave avo avr avs avu c-- caa cac cad cae cao car cas cau cav cca ccc ccd cce cco ccr ccs ccu ccv cda cdc cdd cde cdo cdr cds cdu cdv ce- cea cec ced cee ceo cer ces ceu cev co- coa coc cod coe coo cor cos cou cov cra crc crd cre cro crr crs cru crv csa csc csd cse cso csr css csu csv cua cuc cud cue cuo cur cus cuu cuv cva cvc cvd cve cvo cvr cvs cvu cvv daa dac dad dae dao dar das dau dav dca dcc dcd dce dco dcr dcs dcu dcv dda ddc ddd dde ddo ddr dds ddu de- dea dec ded dee deo der des deu dev doa doc dod doe doo dor dos dou dov dra drc drd dre dro drr drs dru drv dsa dsc dsd dse dso dsr dss dsu dsv dua duc dud due duo dur dus duv dva dvc dvd dve dvr dvs dvu eaa eac ead eae eao ear eas eau eav ec- eca ecc ecd ece eco ecr ecs ecu ecv ed- eda edc edd ede edo edr eds edu eea eec eed eee eeo eer ees eev eo- eoa eoc eod eoe eoo eor eos eou era erc erd ere ero err ers eru erv es- esa esc esd ese eso esr ess esu esv eu- eua euc eud eue eur eus euv eva evc evd eve evo evr evs evv oaa oac oad oae oao oar oas oau oav oc- oca occ ocd oco ocr ocs ocu ocv oda odc odd ode odo odr ods odu odv oea oec oed oee oeo oer oes oo- ooa ooc ood ooo oor oos oov or- ora orc ord ore oro orr ors oru orv os- osa osc osd ose oso osr oss osu osv ou- oua ouc oud oue ouo our ous ov- ova ovc ovd ove ovo ovs ovv ra- raa rac rad rae rao rar ras rau rav rca rcc rcd rce rco rcr rcs rcu rcv rda rdc rdd rde rdo rdr rds rdu rdv re- rea rec red ree reo rer res reu rev roa roc rod roe roo ror ros rou rov rra rrc rrd rrr rrs rru rsa rsc rsd rse rso rsr rss rsu rsv rua ruc rud rue ruo rur rus ruu ruv rva rvc rvd rve rvo rvr rvs rvu rvv saa sac sad sae sao sar sas sau sav sca scc scd sce sco scr scs scu scv sda sdc sdd sde sdo sdr sds sdu sdv se- sea sec sed see seo ser ses seu sev soa soc sod soe soo sor sos sou sov sr- sra src srd sre sro srr srs srv ss- ssa ssc ssd sse sso ssr sss ssu ssv sua suc sud sue suo sur sus suu suv sva svc svd sve svo svr svs svu svv ua- uaa uac uad uae uao uar uas uau uav uca ucc ucd uce uco ucr ucs ucu ucv uda udc udd ude udo udr uds udu udv uea uec ued uee uer ues uoa uoc uod uoe uoo uor uos ur- ura urc urd ure uro urr urs uru usa usc usd use uso usr uss usu usv uua uuc uue uur uus uuu uva uvc uve uvo uvs uvu uvv v-a v-e vaa vac vad vae vao var vas vau vav vca vcc vcd vce vco vcr vcs vcu vdc vdd vde vdo vdr vds vdu vdv vea vec ved vee veo ver ves veu voa voc vod voe voo vor vos vou vov vra vrc vrd vre vrr vrs vru vsa vsc vsd vse vso vsr vss vsu vsv vue vur vus vuv vva vvc vvo vvr vvs vvv