-er a-a a-c a-q aaa aac aae aak aan aaq aar aas aau ac- aca acc ace ack acn acq acr acs acu aea aec aee aek aen aeq aer aes aeu aka akc ake akk akn akr aks aku an- ana anc ane ank ann anq anr ans anu aqa aqc aqn aqr aqs ar- ara arc are ark arn arq arr ars aru as- asa asc ase ask asn asq asr ass asu au- aua auc aue auk aun aur aus c-- caa cac cae cak can caq car cas cau cca ccc cce cck ccn ccr ccs ccu ce- cea cec cee cek cen ceq cer ces ceu cka ckc cks cn- cna cnc cne cnn cnr cns cnu cqa cqc cqs cra crc cre crk crn crq crr crs cru csa csc cse csk csn csq csr css csu cua cuc cue cuk cun cuq cur cus cuu eaa eac eae eak ean ear eas eau ec- eca ecc ece eck ecn ecq ecr ecs ecu eea eec eee eek een eer ees eka ekc eke ekr eks eku en- ena enc ene enk enn enr ens enu eqa eqe eqn eqq eqs equ era erc ere erk ern erq err ers eru es- esa esc ese esk esn esq esr ess esu eu- eua euc eue eun eur eus ka- kaa kac kae kak kan kar kas kau kca kcc kce kck kcn kcr kcs kcu ke- kea kec kee kek ken ker kes kkc kke kkk kkn kkr kks kku kn- kna knc kne knk knn knr knu kqa kra krc krk krn krr krs kru ksa ksc kse ksk ksn ksr kss ksu kuc kue kuk kun kur kus kuu naa nac nae nak nan nar nas nau nca ncc nce nck ncn ncr ncs ncu ne- nea nec nee nek nen ner nes neu nka nkc nke nkk nkn nkr nks nku nna nnc nne nnk nnn nns nnu nqc nqs nra nrc nre nrk nrn nrr nrs nru nsa nsc nse nsk nsn nsr nss nsu nua nuc nue nuk nun nuq nur nus nuu qaa qac qan qar qas qau qca qcc qcs qec qee qen qne qnk qns qqk qqq qqu qra qrc qre qrs qru qsa qsc qsr qu- qua que qur qus ra- raa rac rae rak ran raq rar ras rau rca rcc rce rcn rcr rcs rcu re- rea rec ree rek ren req rer res reu rkc rke rkk rks rku rna rnc rnn rnr rns rnu rqc rqn rqs rra rrc rrk rrn rrq rrr rrs rru rsa rsc rse rsk rsn rsq rsr rss rsu rua ruc rue ruk run rur rus ruu saa sac sae sak san saq sar sas sau sca scc sce sck scn scr scs scu se- sea sec see sek sen seq ser ses seu sk- ska skc ske skk skq skr sks sku sna snc sne snk snn snr sns snu sqa sqn sqq sqr sqs sr- sra src sre srk srn srq srr srs ss- ssa ssc sse ssk ssn ssq ssr sss ssu sua suc sue suk sun suq sur sus suu ua- uaa uac uae uak uan uaq uar uas uau uca ucc uce uck ucn ucr ucs ucu uea uec uee uen uer ues uka ukc uke ukk ukn ukr uku un- una unc une unk unn unq unr uns unu ur- ura urc ure urk urn urr urs uru usa usc use usk usn usr uss usu uua uuc uue uun uur uus uuu