-ic -th b-u bbb bbc bbg bbh bbi bbn bbt bbu bcb bcc bcg bch bci bcn bct bcu bgb bgc bgg bgh bgi bgn bgt bgu bhb bhc bhg bhh bhi bht bhu bi- bib bic big bih bii bin bit biu bnb bnc bng bni bnn bnt bnu btb btc btg bth bti btn btt btu bub buc bug buh bui bun but buu c-- cbb cbc cbg cbh cbi cbn cbt cbu ccb ccc ccg cch cci ccn cct ccu cgb cgc cgg cgh cgi cgn cgt cgu ch- chb chc chg chh chi chn cht chu ci- cib cic cig cih cii cin cit ciu cn- cnb cnc cng cnh cni cnn cnt cnu ctb ctc ctg cth cti ctn ctt ctu cub cuc cug cuh cui cun cut cuu gbc gbg gbh gbi gbn gbt gbu gcb gcc gcg gch gci gcn gct gcu ggb ggc ggg ggh ggi ggn ggt ggu ghb ghc ghg ghh ghi ghn ght gib gic gig gih gii gin git giu gnb gnc gni gnn gnt gnu gtb gtc gtg gth gti gtn gtt gtu gu- gub guc gug gui gun gut guu h-i hbb hbc hbg hbh hbi hbn hbt hbu hcb hcc hcg hch hci hcn hct hgb hgc hgg hgh hgi hgn hgt hgu hhb hhc hhg hhh hhi hhn hht hhu hib hic hig hih hii hin hit hiu hnb hnc hng hnh hnn hnt hnu htb htc htg hth hti htn htt hub huc hug huh hui hun hut huu ibb ibc ibg ibh ibi ibn ibt ibu icb icc icg ich ici icn ict icu igb igc igg igh igi ign igt igu ihb ihc ihg ihh ihi ihn iht ihu iib iic iih iii iin iit iiu in- inb inc ing inh ini inn int inu itb itc itg ith iti itn itt itu iu- iub iuc iug iui iut n-i nbb nbc nbg nbi nbn nbt nbu ncb ncc ncg nch nci ncn nct ncu ngb ngc ngg ngh ngi ngn ngt ngu nhb nhc nhg nhh nhi nhn nht nhu nib nic nig nih nii nin nit niu nnb nnc nng nnh nni nnn nnt nnu ntb ntc ntg nth nti ntn ntt ntu nub nuc nug nuh nui nun nut nuu tbb tbc tbg tbh tbi tbn tbt tbu tcb tcc tcg tch tci tcn tct tcu tgb tgc tgg tgh tgi tgn tgt tgu th- thb thc thg thh thi thn tht thu tib tic tig tih tii tin tit tiu tnb tnc tng tnh tni tnn tnt ttb ttc ttg tth tti ttn ttt ttu tub tuc tug tuh tui tun tut tuu ubb ubc ubg ubh ubi ubn ubt ubu ucb ucc ucg uch uci ucn uct ucu ugb ugc ugg ugh ugi ugn ugt ugu uhb uhc uhh uhi uht uhu uib uic uig uii uin uit uiu un- unb unc ung unh uni unn unt unu utb utc uth uti utn utt utu uuc uug uun uut uuu