-er a-a a-c aaa aac aae aao aar aas aau aav ac- aca acc ace aco acr acs acu acv aea aec aee aeo aer aes aeu aev aoa aoc aoe aoo aor aos aou aov ar- ara arc are aro arr ars aru arv as- asa asc ase aso asr ass asu asv au- aua auc aue auo aur aus auv av- ava avc ave avo avr avs avu c-- caa cac cae cao car cas cau cav cca ccc cce cco ccr ccs ccu ccv ce- cea cec cee ceo cer ces ceu cev co- coa coc coe coo cor cos cou cov cra crc cre cro crr crs cru crv csa csc cse cso csr css csu csv cua cuc cue cuo cur cus cuu cuv cva cvc cve cvo cvr cvs cvu cvv eaa eac eae eao ear eas eau eav ec- eca ecc ece eco ecr ecs ecu ecv eea eec eee eeo eer ees eev eo- eoa eoc eoe eoo eor eos eou era erc ere ero err ers eru erv es- esa esc ese eso esr ess esu esv eu- eua euc eue eur eus euv eva evc eve evo evr evs evv oaa oac oae oao oar oas oau oav oc- oca occ oco ocr ocs ocu ocv oea oec oee oeo oer oes oo- ooa ooc ooo oor oos oov or- ora orc ore oro orr ors oru orv os- osa osc ose oso osr oss osu osv ou- oua ouc oue ouo our ous ov- ova ovc ove ovo ovs ovv ra- raa rac rae rao rar ras rau rav rca rcc rce rco rcr rcs rcu rcv re- rea rec ree reo rer res reu rev roa roc roe roo ror ros rou rov rra rrc rrr rrs rru rsa rsc rse rso rsr rss rsu rsv rua ruc rue ruo rur rus ruu ruv rva rvc rve rvo rvr rvs rvu rvv saa sac sae sao sar sas sau sav sca scc sce sco scr scs scu scv se- sea sec see seo ser ses seu sev soa soc soe soo sor sos sou sov sr- sra src sre sro srr srs srv ss- ssa ssc sse sso ssr sss ssu ssv sua suc sue suo sur sus suu suv sva svc sve svo svr svs svu svv ua- uaa uac uae uao uar uas uau uav uca ucc uce uco ucr ucs ucu ucv uea uec uee uer ues uoa uoc uoe uoo uor uos ur- ura urc ure uro urr urs uru usa usc 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 vae vao var vas vau vav vca vcc vce vco vcr vcs vcu vea vec vee veo ver ves veu voa voc voe voo vor vos vou vov vra vrc vre vrr vrs vru vsa vsc vse vso vsr vss vsu vsv vue vur vus vuv vva vvc vvo vvr vvs vvv