a-a a-c aaa aac aaf aah aao aar aau ac- aca acc acf ach aco acr acu af- afa afc aff afh afo afr afu aha ahc ahf ahh aho ahr ahu aoa aoc aof aoh aoo aor aou ar- ara arc arf arh aro arr aru au- aua auc auf auh auo aur c-- caa cac caf cah cao car cau cca ccc ccf cch cco ccr ccu cfa cfc cff cfh cfo cfr cfu ch- cha chc chf chh cho chr chu co- coa coc cof coh coo cor cou cra crc crf crh cro crr cru cua cuc cuf cuh cuo cur cuu faa fac faf fah fao far fau fca fcc fcf fco fcr fcu ffa ffc fff ffh ffo ffr ffu fha fhc fhf fhh fho fhr foa foc fof foh foo for fou fra frc frf frh fro frr fru fua fuf fuo fur fuu haa hac haf hah hao har hau hca hcc hcf hch hco hcr hfa hfc hff hfh hfo hfr hfu hha hhc hhf hhh hho hhr hhu hoa hoc hof hoh hoo hor hou hr- hra hrc hrf hrh hro hrr hru hua huc huf huh huo hur huu oaa oac oaf oah oao oar oau oc- oca occ ocf och oco ocr ocu of- ofa ofc off ofo ofr ofu oha ohc ohf ohh oho ohr ohu oo- ooa ooc oof ooh ooo oor or- ora orc orf orh oro orr oru ou- oua ouc ouf ouh ouo our ra- raa rac raf rah rao rar rau rca rcc rcf rch rco rcr rcu rfa rfc rff rfh rfo rfr rfu rh- rha rhc rhf rhh rho rhr rhu roa roc rof roh roo ror rou rra rrc rrf rrh rrr rru rua ruc ruf ruh ruo rur ruu ua- uaa uac uaf uah uao uar uau uca ucc ucf uch uco ucr ucu ufa ufc uff ufh ufo ufr ufu uha uhc uhf uhh uho uhr uhu uoa uoc uoo uor ur- ura urc urf uro urr uru uua uuc uur uuu