-ic b-u bbb bbc bbi bbn bbt bbu bcb bcc bci bcn bct bcu bi- bib bic bii bin bit biu bnb bnc bni bnn bnt bnu btb btc bti btn btt btu bub buc bui bun but buu c-- cbb cbc cbi cbn cbt cbu ccb ccc cci ccn cct ccu ci- cib cic cii cin cit ciu cn- cnb cnc cni cnn cnt cnu ctb ctc cti ctn ctt ctu cub cuc cui cun cut cuu ibb ibc ibi ibn ibt ibu icb icc ici icn ict icu iib iic iii iin iit iiu in- inb inc ini inn int inu itb itc iti itn itt itu iu- iub iuc iui iut n-i nbb nbc nbi nbn nbt nbu ncb ncc nci ncn nct ncu nib nic nii nin nit niu nnb nnc nni nnn nnt nnu ntb ntc nti ntn ntt ntu nub nuc nui nun nut nuu tbb tbc tbi tbn tbt tbu tcb tcc tci tcn tct tcu tib tic tii tin tit tiu tnb tnc tni tnn tnt ttb ttc tti ttn ttt ttu tub tuc tui tun tut tuu ubb ubc ubi ubn ubt ubu ucb ucc uci ucn uct ucu uib uic uii uin uit uiu un- unb unc uni unn unt unu utb utc uti utn utt utu uuc uun uut uuu