a-a a-c aaa aac aah aao aau ac- aca acc ach aco acu aha ahc ahh aho ahu aoa aoc aoh aoo aou au- aua auc auh auo c-- caa cac cah cao cau cca ccc cch cco ccu ch- cha chc chh cho chu co- coa coc coh coo cou cua cuc cuh cuo cuu haa hac hah hao hau hca hcc hch hco hha hhc hhh hho hhu hoa hoc hoh hoo hou hua huc huh huo huu oaa oac oah oao oau oc- oca occ och oco ocu oha ohc ohh oho ohu oo- ooa ooc ooh ooo ou- oua ouc ouh ouo ua- uaa uac uah uao uau uca ucc uch uco ucu uha uhc uhh uho uhu uoa uoc uoo uua uuc uuu