-ic b-u bbb bbc bbe bbi bbn bbt bbu bcb bcc bce bci bcn bct bcu be- beb bec bee bei ben bet beu bi- bib bic bie bii bin bit biu bnb bnc bne bni bnn bnt bnu btb btc bte bti btn btt btu bub buc bue bui bun but buu c-- cbb cbc cbe cbi cbn cbt cbu ccb ccc cce cci ccn cct ccu ce- ceb cec cee cei cen cet ceu ci- cib cic cie cii cin cit ciu cn- cnb cnc cne cni cnn cnt cnu ctb ctc cte cti ctn ctt ctu cub cuc cue cui cun cut cuu ebb ebc ebe ebi ebn ebt ebu ec- ecb ecc ece eci ecn ect ecu eeb eec eee een eet eib eic eie eii ein eit eiu en- enb enc ene eni enn ent enu etb etc ete eti etn ett etu eu- eub euc eue eui eun eut ibb ibc ibe ibi ibn ibt ibu icb icc ice ici icn ict icu ie- iec iee iei ien iet iib iic iie iii iin iit iiu in- inb inc ine ini inn int inu itb itc ite iti itn itt itu iu- iub iuc iue iui iut n-i nbb nbc nbe nbi nbn nbt nbu ncb ncc nce nci ncn nct ncu ne- neb nec nee nei nen net neu nib nic nie nii nin nit niu nnb nnc nne nni nnn nnt nnu ntb ntc nte nti ntn ntt ntu nub nuc nue nui nun nut nuu tbb tbc tbe tbi tbn tbt tbu tcb tcc tce tci tcn tct tcu te- teb tec tee tei ten tet teu tib tic tie tii tin tit tiu tnb tnc tne tni tnn tnt ttb ttc tte tti ttn ttt ttu tub tuc tue tui tun tut tuu ubb ubc ube ubi ubn ubt ubu ucb ucc uce uci ucn uct ucu ueb uec uee uei uen uet uib uic uie uii uin uit uiu un- unb unc une uni unn unt unu utb utc ute uti utn utt utu uuc uue uun uut uuu