-er a-a a-c aaa aac aae aan aao aar aau aav ac- aca acc ace acn aco acr acu acv aea aec aee aen aeo aer aeu aev an- ana anc ane ann ano anr anu anv aoa aoc aoe aon aoo aor aou aov ar- ara arc are arn aro arr aru arv au- aua auc aue aun auo aur auv av- ava avc ave avn avo avr avu c-- caa cac cae can cao car cau cav cca ccc cce ccn cco ccr ccu ccv ce- cea cec cee cen ceo cer ceu cev cn- cna cnc cne cnn cno cnr cnu cnv co- coa coc coe con coo cor cou cov cra crc cre crn cro crr cru crv cua cuc cue cun cuo cur cuu cuv cva cvc cve cvn cvo cvr cvu cvv eaa eac eae ean eao ear eau eav ec- eca ecc ece ecn eco ecr ecu ecv eea eec eee een eeo eer eev en- ena enc ene enn eno enr enu env eo- eoa eoc eoe eon eoo eor eou era erc ere ern ero err eru erv eu- eua euc eue eun eur euv eva evc eve evn evo evr evv naa nac nae nan nao nar nau nav nca ncc nce ncn nco ncr ncu ncv ne- nea nec nee nen neo ner neu nev nna nnc nne nnn nno nnu nnv no- noa noc noe non noo nor nou nov nra nrc nre nrn nro nrr nru nrv nua nuc nue nun nuo nur nuu nuv nva nvc nve nvn nvu nvv oaa oac oae oan oao oar oau oav oc- oca occ ocn oco ocr ocu ocv oea oec oee oen oeo oer on- ona onc one onn ono onr onu oo- ooa ooc oon ooo oor oov or- ora orc ore orn oro orr oru orv ou- oua ouc oue oun ouo our ov- ova ovc ove ovo ovv ra- raa rac rae ran rao rar rau rav rca rcc rce rcn rco rcr rcu rcv re- rea rec ree ren reo rer reu rev rna rnc rnn rno rnr rnu rnv roa roc roe ron roo ror rou rov rra rrc rrn rrr rru rua ruc rue run ruo rur ruu ruv rva rvc rve rvn rvo rvr rvu rvv ua- uaa uac uae uan uao uar uau uav uca ucc uce ucn uco ucr ucu ucv uea uec uee uen uer un- una unc une unn uno unr unu unv uoa uoc uoe uon uoo uor ur- ura urc ure urn uro urr uru uua uuc uue uun uur uuu uva uvc uve uvo uvu uvv v-a v-e vaa vac vae van vao var vau vav vca vcc vce vcn vco vcr vcu vea vec vee ven veo ver veu vn- vna vno vnr vnu vnv voa voc voe von voo vor vou vov vra vrc vre vrn vrr vru vue vur vuv vva vvc vvo vvr vvv