-er a-a a-c aaa aac aae aan aar aau aav ac- aca acc ace acn acr acu acv aea aec aee aen aer aeu aev an- ana anc ane ann anr anu anv ar- ara arc are arn arr aru arv au- aua auc aue aun aur auv av- ava avc ave avn avr avu c-- caa cac cae can car cau cav cca ccc cce ccn ccr ccu ccv ce- cea cec cee cen cer ceu cev cn- cna cnc cne cnn cnr cnu cnv cra crc cre crn crr cru crv cua cuc cue cun cur cuu cuv cva cvc cve cvn cvr cvu cvv eaa eac eae ean ear eau eav ec- eca ecc ece ecn ecr ecu ecv eea eec eee een eer eev en- ena enc ene enn enr enu env era erc ere ern err eru erv eu- eua euc eue eun eur euv eva evc eve evn evr evv naa nac nae nan nar nau nav nca ncc nce ncn ncr ncu ncv ne- nea nec nee nen ner neu nev nna nnc nne nnn nnu nnv nra nrc nre nrn nrr nru nrv nua nuc nue nun nur nuu nuv nva nvc nve nvn nvu nvv ra- raa rac rae ran rar rau rav rca rcc rce rcn rcr rcu rcv re- rea rec ree ren rer reu rev rna rnc rnn rnr rnu rnv rra rrc rrn rrr rru rua ruc rue run rur ruu ruv rva rvc rve rvn rvr rvu rvv ua- uaa uac uae uan uar uau uav uca ucc uce ucn ucr ucu ucv uea uec uee uen uer un- una unc une unn unr unu unv ur- ura urc ure urn urr uru uua uuc uue uun uur uuu uva uvc uve uvu uvv v-a v-e vaa vac vae van var vau vav vca vcc vce vcn vcr vcu vea vec vee ven ver veu vn- vna vnr vnu vnv vra vrc vre vrn vrr vru vue vur vuv vva vvc vvr vvv