-er a-a a-c aaa aac aad aae aak aan aar aau ac- aca acc acd ace ack acn acr acu ad- ada adc add ade adk adn adr adu aea aec aed aee aek aen aer aeu aka akc akd ake akk akn akr aku an- ana anc and ane ank ann anr anu ar- ara arc ard are ark arn arr aru au- aua auc aud aue auk aun aur c-- caa cac cad cae cak can car cau cca ccc ccd cce cck ccn ccr ccu cda cdc cdd cde cdk cdn cdr cdu ce- cea cec ced cee cek cen cer ceu cka ckc ckd cn- cna cnc cnd cne cnn cnr cnu cra crc crd cre crk crn crr cru cua cuc cud cue cuk cun cur cuu daa dac dad dae dak dan dar dau dca dcc dcd dce dck dcn dcr dcu dda ddc ddd dde ddk ddn ddr ddu de- dea dec ded dee dek den der deu dka dkc dke dkk dkr dku dna dnc dnd dne dnk dnn dnr dra drc drd dre drk drn drr dru dua duc dud due duk dun dur eaa eac ead eae eak ean ear eau ec- eca ecc ecd ece eck ecn ecr ecu ed- eda edc edd ede edk edn edr edu eea eec eed eee eek een eer eka ekc ekd eke ekr eku en- ena enc end ene enk enn enr enu era erc erd ere erk ern err eru eu- eua euc eud eue eun eur ka- kaa kac kad kae kak kan kar kau kca kcc kcd kce kck kcn kcr kcu kda kdc kde kdk kdr kdu ke- kea kec ked kee kek ken ker kkc kke kkk kkn kkr kku kn- kna knc knd kne knk knn knr knu kra krc krd krk krn krr kru kuc kud kue kuk kun kur kuu naa nac nad nae nak nan nar nau nca ncc ncd nce nck ncn ncr ncu nda ndc ndd nde ndk ndn ndr ndu ne- nea nec ned nee nek nen ner neu nka nkc nke nkk nkn nkr nku nna nnc nne nnk nnn nnu nra nrc nrd nre nrk nrn nrr nru nua nuc nud nue nuk nun nur nuu ra- raa rac rad rae rak ran rar rau rca rcc rcd rce rcn rcr rcu rda rdc rdd rde rdn rdr rdu re- rea rec red ree rek ren rer reu rkc rke rkk rku rna rnc rnd rnn rnr rnu rra rrc rrd rrk rrn rrr rru rua ruc rud rue ruk run rur ruu ua- uaa uac uad uae uak uan uar uau uca ucc ucd uce uck ucn ucr ucu uda udc udd ude udk udn udr udu uea uec ued uee uen uer uka ukc uke ukk ukn ukr uku un- una unc und une unk unn unr unu ur- ura urc urd ure urk urn urr uru uua uuc uue uun uur uuu