-ic b-u bbb bbc bbi bbk bbn bbu bcb bcc bci bck bcn bcu bi- bib bic bii bik bin biu bkb bkc bkk bkn bnb bnc bni bnk bnn bnu bub buc bui buk bun buu c-- cbb cbc cbi cbk cbn cbu ccb ccc cci cck ccn ccu ci- cib cic cii cik cin ciu ckb ckc cki cn- cnb cnc cni cnn cnu cub cuc cui cuk cun cuu ibb ibc ibi ibk ibn ibu icb icc ici ick icn icu iib iic iii iin iiu ikb ikc iki ikk iku in- inb inc ini ink inn inu iu- iub iuc iui kbb kbc kbi kbk kbn kbu kcb kcc kci kck kcn kcu kib kic kii kik kin kiu kkb kkc kki kkk kkn kku kn- knc kni knk knn knu kub kuc kui kuk kun kuu n-i nbb nbc nbi nbk nbn nbu ncb ncc nci nck ncn ncu nib nic nii nik nin niu nkc nki nkk nkn nku nnb nnc nni nnk nnn nnu nub nuc nui nuk nun nuu ubb ubc ubi ubk ubn ubu ucb ucc uci uck ucn ucu uib uic uii uin uiu ukb ukc uki ukk ukn uku un- unb unc uni unk unn unu uuc uun uuu