a-a a-c aaa aac aah aak aao aar aau ac- aca acc ach ack aco acr acu aha ahc ahh ahk aho ahr ahu aka akc akh akk ako akr aku aoa aoc aoh aok aoo aor aou ar- ara arc arh ark aro arr aru au- aua auc auh auk auo aur c-- caa cac cah cak cao car cau cca ccc cch cck cco ccr ccu ch- cha chc chh chk cho chr chu cka ckc ckh cko co- coa coc coh cok coo cor cou cra crc crh crk cro crr cru cua cuc cuh cuk cuo cur cuu haa hac hah hak hao har hau hca hcc hch hck hco hcr hha hhc hhh hhk hho hhr hhu hka hkh hkk hko hkr hku hoa hoc hoh hok hoo hor hou hr- hra hrc hrh hrk hro hrr hru hua huc huh huk huo hur huu ka- kaa kac kah kak kao kar kau kca kcc kch kck kcr kcu kha khh khk kho khr khu kkc kkh kkk kkr kku koa koc koh kok koo kor kou kra krc krk kro krr kru kuc kuh kuk kur kuu oaa oac oah oak oao oar oau oc- oca occ och ock oco ocr ocu oha ohc ohh oho ohr ohu oka okc okk oko okr oku oo- ooa ooc ooh ook ooo oor or- ora orc orh ork oro orr oru ou- oua ouc ouh ouk ouo our ra- raa rac rah rak rao rar rau rca rcc rch rco rcr rcu rh- rha rhc rhh rho rhr rhu rkc rkk rko rku roa roc roh rok roo ror rou rra rrc rrh rrk rrr rru rua ruc ruh ruk ruo rur ruu ua- uaa uac uah uak uao uar uau uca ucc uch uck uco ucr ucu uha uhc uhh uho uhr uhu uka ukc ukk ukr uku uoa uoc uok uoo uor ur- ura urc urk uro urr uru uua uuc uur uuu