-ic b-u bbb bbc bbd bbi bbk bbl bbn bbu bcb bcc bcd bci bck bcl bcn bcu bdb bdc bdd bdi bdk bdl bdu bi- bib bic bid bii bik bil bin biu bkb bkc bkk bkl bkn blb blc bld bli blk bll bln blu bnb bnc bnd bni bnk bnl bnn bnu bub buc bud bui buk bul bun buu c-- cbb cbc cbd cbi cbk cbl cbn cbu ccb ccc ccd cci cck ccl ccn ccu cdb cdc cdd cdi cdk cdl cdn cdu ci- cib cic cid cii cik cil cin ciu ckb ckc ckd cki cl- clb clc cld cli clk cll cln clu cn- cnb cnc cnd cni cnl cnn cnu cub cuc cud cui cuk cul cun cuu dbb dbc dbd dbi dbk dbl dbn dbu dcb dcc dcd dci dck dcl dcn dcu ddb ddc ddd ddi ddk ddl ddn ddu di- dib dic did dii dik dil din diu dkb dkc dki dkk dkl dku dl- dlb dlc dld dli dlk dll dlu dnb dnc dnd dni dnk dnl dnn dub duc dud dui duk dul dun i-d ibb ibc ibd ibi ibk ibl ibn ibu icb icc icd ici ick icl icn icu idb idc idd idi idk idl idn idu iib iic iid iii iil iin iiu ikb ikc iki ikk ikl iku il- ilb ilc ild ili ilk ill iln ilu in- inb inc ind ini ink inl inn inu iu- iub iuc iud iui kbb kbc kbd kbi kbk kbl kbn kbu kcb kcc kcd kci kck kcl kcn kcu kdb kdc kdk kdl kdu kib kic kid kii kik kil kin kiu kkb kkc kki kkk kkl kkn kku kl- klb klc kld kli klu kn- knc knd kni knk knl knn knu kub kuc kud kui kuk kul kun kuu lbb lbc lbd lbi lbk lbl lbu lcb lcc lcd lci lck lcl lcn lcu ldb ldc ldd ldi ldk ldl ldn ldu lib lic lid lii lik lil lin liu lkb lkl llb llc lld lli llk lll lln llu lnb lnc lnd lni lnk lnl lnn lnu lub luc lud lui luk lul lun luu n-i nbb nbc nbd nbi nbk nbl nbn nbu ncb ncc ncd nci nck ncl ncn ncu ndb ndc ndd ndi ndk ndl ndn ndu nib nic nid nii nik nil nin niu nkc nki nkk nkn nku nlb nlc nld nli nlk nll nln nlu nnb nnc nni nnk nnl nnn nnu nub nuc nud nui nuk nul nun nuu ubb ubc ubi ubk ubl ubn ubu ucb ucc ucd uci uck ucl ucn ucu udb udc udd udi udk udl udn udu uib uic uid uii uil uin uiu ukb ukc uki ukk ukl ukn uku ulb ulc uld uli ulk ull uln ulu un- unb unc und uni unk unl unn unu uuc uun uuu