-ic bbb bbc bbe bbg bbi bbk bbl bbn bcb bcc bce bcg bci bck bcl bcn be- beb bec bee beg bei bek bel ben bgb bgc bge bgg bgi bgk bgl bgn bi- bib bic bie big bii bik bil bin bkb bkc bke bkg bkk bkl bkn blb blc ble blg bli blk bll bln bnb bnc bne bng bni bnk bnl bnn c-- cbb cbc cbe cbg cbi cbk cbl cbn ccb ccc cce ccg cci cck ccl ccn ce- ceb cec cee ceg cei cek cel cen cgb cgc cge cgg cgi cgl cgn ci- cib cic cie cig cii cik cil cin ckb ckc cki cl- clb clc cle clg cli clk cll cln cn- cnb cnc cne cng cni cnl cnn ebb ebc ebe ebg ebi ebk ebl ebn ec- ecb ecc ece ecg eci eck ecl ecn eeb eec eee eeg eek eel een egb egc ege egg egi egl egn eib eic eie eig eii eik eil ein ekb ekc eke ekg eki ekl elb elc ele elg eli elk ell eln en- enb enc ene eng eni enk enl enn gbc gbe gbg gbi gbk gbl gbn gcb gcc gce gcg gci gck gcl gcn ge- geb gec gee geg gei gek gel gen ggb ggc ggg ggi ggn gib gic gie gig gii gik gil gin gkb gkn glb glc gle glg gli glk gll gln gnb gnc gne gni gnl gnn ibb ibc ibe ibg ibi ibk ibl ibn icb icc ice icg ici ick icl icn ie- iec iee ieg iei iek iel ien igb igc ige igg igi igk igl ign iib iic iie iii iil iin ikb ikc ike iki ikk ikl il- ilb ilc ile ilg ili ilk ill iln in- inb inc ine ing ini ink inl inn kbb kbc kbe kbi kbk kbl kbn kcb kcc kce kcg kci kck kcl kcn ke- keb kec kee keg kei kek kel ken kgb kgc kgi kgl kib kic kie kig kii kik kil kin kkb kkc kke kki kkk kkl kkn kl- klb klc klg kli kn- knc kne kng kni knk knl knn lbb lbc lbe lbg lbi lbk lbl lcb lcc lce lcg lci lck lcl lcn leb lec lee leg lei lek lel len lgb lgc lge lgg lgi lgk lgl lgn lib lic lie lig lii lik lil lin lkb lkg lkl llb llc lle llg lli llk lll lln lnb lnc lne lng lni lnk lnl lnn n-i nbb nbc nbe nbg nbi nbk nbl nbn ncb ncc nce ncg nci nck ncl ncn ne- neb nec nee neg nei nek nel nen ngb ngc nge ngg ngi ngk ngl ngn nib nic nie nig nii nik nil nin nkc nke nki nkk nkn nlb nlc nle nlg nli nlk nll nln nnb nnc nne nng nni nnk nnl nnn