-ic a-a a-b a-c a-i aaa aab aac aah aai aao aau ab- aba abb abc abh abi abo abu ac- aca acb acc ach aci aco acu aha ahb ahc ahh ahi aho ahu ai- aia aib aic aih aii aio aiu aoa aob aoc aoh aoi aoo aou au- aua aub auc auh aui auo b-u baa bab bac bah bai bao bau bba bbb bbc bbh bbi bbo bbu bca bcb bcc bch bci bco bcu bha bhb bhc bhh bhi bho bhu bi- bia bib bic bih bii bio biu boa bob boc boh boi boo bou bua bub buc buh bui buo buu c-- caa cab cac cah cai cao cau cba cbb cbc cbh cbi cbo cbu cca ccb ccc cch cci cco ccu ch- cha chb chc chh chi cho chu ci- cia cib cic cih cii cio ciu co- coa cob coc coh coi coo cou cua cub cuc cuh cui cuo cuu h-i haa hab hac hah hai hao hau hba hbb hbc hbh hbi hbo hbu hca hcb hcc hch hci hco hha hhb hhc hhh hhi hho hhu hia hib hic hih hii hio hiu hoa hob hoc hoh hoi hoo hou hua hub huc huh hui huo huu ia- iaa iab iac iah iai iao iau iba ibb ibc ibh ibi ibo ibu ica icb icc ich ici ico icu iha ihb ihc ihh ihi iho ihu iia iib iic iih iii iio iiu io- ioa iob ioc ioh ioi ioo iou iu- iua iub iuc iui o-i oaa oab oac oah oai oao oau ob- oba obb obc obh obi obo obu oc- oca ocb occ och oci oco ocu oha ohc ohh ohi oho ohu oia oib oic oii oio oiu oo- ooa oob ooc ooh ooi ooo ou- oua ouc ouh oui ouo ua- uaa uab uac uah uai uao uau uba ubb ubc ubh ubi ubo ubu uca ucb ucc uch uci uco ucu uha uhb uhc uhh uhi uho uhu uia uib uic uii uio uiu uoa uob uoc uoo uua uuc uuu