-er a-a a-c aaa aac aae aah aak aar aau ac- aca acc ace ach ack acr acu aea aec aee aeh aek aer aeu aha ahc ahe ahh ahk ahr ahu aka akc ake akh akk akr aku ar- ara arc are arh ark arr aru au- aua auc aue auh auk aur c-- caa cac cae cah cak car cau cca ccc cce cch cck ccr ccu ce- cea cec cee ceh cek cer ceu ch- cha chc che chh chk chr chu cka ckc ckh cra crc cre crh crk crr cru cua cuc cue cuh cuk cur cuu eaa eac eae eah eak ear eau ec- eca ecc ece ech eck ecr ecu eea eec eee eek eer eha ehc ehe ehh ehr ehu eka ekc eke ekh ekr eku era erc ere erh erk err eru eu- eua euc eue eur haa hac hae hah hak har hau hca hcc hce hch hck hcr he- hea hec hee heh hek her heu hha hhc hhe hhh hhk hhr hhu hka hkh hkk hkr hku hr- hra hrc hre hrh hrk hrr hru hua huc hue huh huk hur huu ka- kaa kac kae kah kak kar kau kca kcc kce kch kck kcr kcu ke- kea kec kee keh kek ker kha khe khh khk khr khu kkc kke kkh kkk kkr kku kra krc krk krr kru kuc kue kuh kuk kur kuu ra- raa rac rae rah rak rar rau rca rcc rce rch rcr rcu re- rea rec ree reh rek rer reu rh- rha rhc rhe rhh rhr rhu rkc rke rkk rku rra rrc rrh rrk rrr rru rua ruc rue ruh ruk rur ruu ua- uaa uac uae uah uak uar uau uca ucc uce uch uck ucr ucu uea uec uee ueh uer uha uhc uhe uhh uhr uhu uka ukc uke ukk ukr uku ur- ura urc ure urk urr uru uua uuc uue uur uuu