-ic b-u bbb bbc bbg bbi bbn bbu bcb bcc bcg bci bcn bcu bgb bgc bgg bgi bgn bgu bi- bib bic big bii bin biu bnb bnc bng bni bnn bnu bub buc bug bui bun buu c-- cbb cbc cbg cbi cbn cbu ccb ccc ccg cci ccn ccu cgb cgc cgg cgi cgn cgu ci- cib cic cig cii cin ciu cn- cnb cnc cng cni cnn cnu cub cuc cug cui cun cuu gbc gbg gbi gbn gbu gcb gcc gcg gci gcn gcu ggb ggc ggg ggi ggn ggu gib gic gig gii gin giu gnb gnc gni gnn gnu gu- gub guc gug gui gun guu ibb ibc ibg ibi ibn ibu icb icc icg ici icn icu igb igc igg igi ign igu iib iic iii iin iiu in- inb inc ing ini inn inu iu- iub iuc iug iui n-i nbb nbc nbg nbi nbn nbu ncb ncc ncg nci ncn ncu ngb ngc ngg ngi ngn ngu nib nic nig nii nin niu nnb nnc nng nni nnn nnu nub nuc nug nui nun nuu ubb ubc ubg ubi ubn ubu ucb ucc ucg uci ucn ucu ugb ugc ugg ugi ugn ugu uib uic uig uii uin uiu un- unb unc ung uni unn unu uuc uug uun uuu