-er a-a a-c aaa aac aae aaj aak aao aar aau ac- aca acc ace acj ack aco acr acu aea aec aee aej aek aeo aer aeu aja ajc aje ajj ajk ajo ajr aju aka akc ake akj akk ako akr aku aoa aoc aoe aoj aok aoo aor aou ar- ara arc are arj ark aro arr aru au- aua auc aue auj auk auo aur c-- c-j caa cac cae caj cak cao car cau cca ccc cce ccj cck cco ccr ccu ce- cea cec cee cej cek ceo cer ceu cja cjc cjk cjr cka ckc cko co- coa coc coe coj cok coo cor cou cra crc cre crj crk cro crr cru cua cuc cue cuk cuo cur cuu eaa eac eae eaj eak eao ear eau ec- eca ecc ece ecj eck eco ecr ecu eea eec eee eek eeo eer eja ejc ejo eju eka ekc eke eko ekr eku eo- eoa eoc eoe eok eoo eor eou era erc ere erk ero err eru eu- eua euc eue euj eur jaa jac jae jaj jak jao jar jau jca jcc jce jck jco jcr jcu jea jec jee jej jek jeo jer jeu jja jjc jjj jjk jjr jju jka jkk jko jkr jku joa joc joe joj jok joo jor jou jra jrc jrk jro jrr jue juk juo jur ka- kaa kac kae kaj kak kao kar kau kca kcc kce kck kcr kcu ke- kea kec kee kek keo ker kjc kje kjr kju kkc kke kkk kkr kku koa koc koe kok koo kor kou kra krc krk kro krr kru kuc kue kuj kuk kur kuu oaa oac oae oaj oak oao oar oau oc- oca occ ocj ock oco ocr ocu oea oec oee oeo oer oja ojc oje ojo oju oka okc oke okj okk oko okr oku oo- ooa ooc ook ooo oor or- ora orc ore ork oro orr oru ou- oua ouc oue ouk ouo our ra- raa rac rae raj rak rao rar rau rca rcc rce rcj rco rcr rcu re- rea rec ree rek reo rer reu rja rjc rjk rjr rkc rke rkk rko rku roa roc roe roj rok roo ror rou rra rrc rrk rrr rru rua ruc rue ruk ruo rur ruu ua- uaa uac uae uaj uak uao uar uau uca ucc uce ucj uck uco ucr ucu uea uec uee uer ujc ujo uka ukc uke ukk ukr uku uoa uoc uoe uoj uok uoo uor ur- ura urc ure urk uro urr uru uua uuc uue uur uuu