-ic a-a a-b a-c a-i a-t aaa aab aac aai aan aat aau ab- aba abb abc abi abn abt abu ac- aca acb acc aci acn act acu ai- aia aib aic aii ain ait aiu an- ana anb anc ani ann ant anu at- ata atb atc ati atn att atu au- aua aub auc aui aun aut b-u baa bab bac bai ban bat bau bba bbb bbc bbi bbn bbt bbu bca bcb bcc bci bcn bct bcu bi- bia bib bic bii bin bit biu bna bnb bnc bni bnn bnt bnu bta btb btc bti btn btt btu bua bub buc bui bun but buu c-- caa cab cac cai can cat cau cba cbb cbc cbi cbn cbt cbu cca ccb ccc cci ccn cct ccu ci- cia cib cic cii cin cit ciu cn- cna cnb cnc cni cnn cnt cnu cta ctb ctc cti ctn ctt ctu cua cub cuc cui cun cut cuu ia- iaa iab iac iai ian iat iau iba ibb ibc ibi ibn ibt ibu ica icb icc ici icn ict icu iia iib iic iii iin iit iiu in- ina inb inc ini inn int inu ita itb itc iti itn itt itu iu- iua iub iuc iui iut n-i naa nab nac nai nan nat nau nba nbb nbc nbi nbn nbt nbu nca ncb ncc nci ncn nct ncu nia nib nic nii nin nit niu nna nnb nnc nni nnn nnt nnu nta ntb ntc nti ntn ntt ntu nua nub nuc nui nun nut nuu taa tab tac tai tan tat tau tba tbb tbc tbi tbn tbt tbu tca tcb tcc tci tcn tct tcu tia tib tic tii tin tit tiu tna tnb tnc tni tnn tnt tta ttb ttc tti ttn ttt ttu tua tub tuc tui tun tut tuu ua- uaa uab uac uai uan uat uau uba ubb ubc ubi ubn ubt ubu uca ucb ucc uci ucn uct ucu uia uib uic uii uin uit uiu un- una unb unc uni unn unt unu uta utb utc uti utn utt utu uua uuc uun uut uuu