-er a-a a-c a-q aaa aac aae aak aaq aar aas aau ac- aca acc ace ack acq acr acs acu aea aec aee aek aeq aer aes aeu aka akc ake akk akr aks aku aqa aqc aqr aqs ar- ara arc are ark arq arr ars aru as- asa asc ase ask asq asr ass asu au- aua auc aue auk aur aus c-- caa cac cae cak caq car cas cau cca ccc cce cck ccr ccs ccu ce- cea cec cee cek ceq cer ces ceu cka ckc cks cqa cqc cqs cra crc cre crk crq crr crs cru csa csc cse csk csq csr css csu cua cuc cue cuk cuq cur cus cuu eaa eac eae eak ear eas eau ec- eca ecc ece eck ecq ecr ecs ecu eea eec eee eek eer ees eka ekc eke ekr eks eku eqa eqe eqq eqs equ era erc ere erk erq err ers eru es- esa esc ese esk esq esr ess esu eu- eua euc eue eur eus ka- kaa kac kae kak kar kas kau kca kcc kce kck kcr kcs kcu ke- kea kec kee kek ker kes kkc kke kkk kkr kks kku kqa kra krc krk krr krs kru ksa ksc kse ksk ksr kss ksu kuc kue kuk kur kus kuu qaa qac qar qas qau qca qcc qcs qec qee qqk qqq qqu qra qrc qre qrs qru qsa qsc qsr qu- qua que qur qus ra- raa rac rae rak raq rar ras rau rca rcc rce rcr rcs rcu re- rea rec ree rek req rer res reu rkc rke rkk rks rku rqc rqs rra rrc rrk rrq rrr rrs rru rsa rsc rse rsk rsq rsr rss rsu rua ruc rue ruk rur rus ruu saa sac sae sak saq sar sas sau sca scc sce sck scr scs scu se- sea sec see sek seq ser ses seu sk- ska skc ske skk skq skr sks sku sqa sqq sqr sqs sr- sra src sre srk srq srr srs ss- ssa ssc sse ssk ssq ssr sss ssu sua suc sue suk suq sur sus suu ua- uaa uac uae uak uaq uar uas uau uca ucc uce uck ucr ucs ucu uea uec uee uer ues uka ukc uke ukk ukr uku ur- ura urc ure urk urr urs uru usa usc use usk usr uss usu uua uuc uue uur uus uuu