-ic a-a a-b a-c a-i aaa aab aac aah aai aan aao aau ab- aba abb abc abh abi abn abo abu ac- aca acb acc ach aci acn aco acu aha ahb ahc ahh ahi ahn aho ahu ai- aia aib aic aih aii ain aio aiu an- ana anb anc anh ani ann ano anu aoa aob aoc aoh aoi aon aoo aou au- aua aub auc auh aui aun auo b-u baa bab bac bah bai ban bao bau bba bbb bbc bbh bbi bbn bbo bbu bca bcb bcc bch bci bcn bco bcu bha bhb bhc bhh bhi bho bhu bi- bia bib bic bih bii bin bio biu bna bnb bnc bni bnn bno bnu boa bob boc boh boi bon boo bou bua bub buc buh bui bun buo buu c-- caa cab cac cah cai can cao cau cba cbb cbc cbh cbi cbn cbo cbu cca ccb ccc cch cci ccn cco ccu ch- cha chb chc chh chi chn cho chu ci- cia cib cic cih cii cin cio ciu cn- cna cnb cnc cnh cni cnn cno cnu co- coa cob coc coh coi con coo cou cua cub cuc cuh cui cun cuo cuu h-i haa hab hac hah hai han hao hau hba hbb hbc hbh hbi hbn hbo hbu hca hcb hcc hch hci hcn hco hha hhb hhc hhh hhi hhn hho hhu hia hib hic hih hii hin hio hiu hna hnb hnc hnh hnn hno hnu hoa hob hoc hoh hoi hon hoo hou hua hub huc huh hui hun huo huu ia- iaa iab iac iah iai ian iao iau iba ibb ibc ibh ibi ibn ibo ibu ica icb icc ich ici icn ico icu iha ihb ihc ihh ihi ihn iho ihu iia iib iic iih iii iin iio iiu in- ina inb inc inh ini inn ino inu io- ioa iob ioc ioh ioi ion ioo iou iu- iua iub iuc iui n-i naa nab nac nah nai nan nao nau nba nbb nbc nbi nbn nbo nbu nca ncb ncc nch nci ncn nco ncu nha nhb nhc nhh nhi nhn nhu nia nib nic nih nii nin nio niu nna nnb nnc nnh nni nnn nno nnu no- noa nob noc noh noi non noo nou nua nub nuc nuh nui nun nuo nuu o-i oaa oab oac oah oai oan oao oau ob- oba obb obc obh obi obn obo obu oc- oca ocb occ och oci ocn oco ocu oha ohc ohh ohi ohn oho ohu oia oib oic oii oin oio oiu on- ona onb onc onh oni onn ono onu oo- ooa oob ooc ooh ooi oon ooo ou- oua ouc ouh oui oun ouo ua- uaa uab uac uah uai uan uao uau uba ubb ubc ubh ubi ubn ubo ubu uca ucb ucc uch uci ucn uco ucu uha uhb uhc uhh uhi uho uhu uia uib uic uii uin uio uiu un- una unb unc unh uni unn uno unu uoa uob uoc uon uoo uua uuc uun uuu