-er bbb bbe bbg bbi bbk bbl bbn bbr be- beb bee beg bei bek bel ben ber bev bgb bge bgg bgi bgk bgl bgn bgr bgv bi- bib bie big bii bik bil bin bir biv bkb bke bkg bkk bkl bkn bkr bkv blb ble blg bli blk bll bln blr blv bnb bne bng bni bnk bnl bnn bnr bnv brb bre brg bri brk brl brn brr brv bvb bve bvg bvi bvk bvl bvn bvr bvv ebb ebe ebg ebi ebk ebl ebn ebr ebv eeb eee eeg eek eel een eer eev egb ege egg egi egl egn egr eib eie eig eii eik eil ein eir eiv ekb eke ekg eki ekl ekr ekv elb ele elg eli elk ell eln elr elv en- enb ene eng eni enk enl enn enr env erb ere erg eri erk erl ern err erv evb eve evg evi evl evn evr evv gbe gbg gbi gbk gbl gbn gbr gbv ge- geb gee geg gei gek gel gen ger gev ggb ggg ggi ggn ggr ggv gib gie gig gii gik gil gin gir giv gkb gkn glb gle glg gli glk gll gln glr glv gnb gne gni gnl gnn gnr gnv grb gre grg gri grk grl grn grr grv gvb gve gvg gvi gvk gvl gvn gvr i-v ibb ibe ibg ibi ibk ibl ibn ibr ibv ie- iee ieg iei iek iel ien ier iev igb ige igg igi igk igl ign igr iib iie iii iil iin iir ikb ike iki ikk ikl ikr ikv il- ilb ile ilg ili ilk ill iln ilr ilv in- inb ine ing ini ink inl inn inr inv ir- irb ire irg iri irk irl irn irr irv ivb ive ivg ivi ivl ivr ivv kbb kbe kbi kbk kbl kbn kbr ke- keb kee keg kei kek kel ken ker kev kgb kgi kgl kgv kib kie kig kii kik kil kin kir kiv kkb kke kki kkk kkl kkn kkr kkv kl- klb klg kli klr klv kn- kne kng kni knk knl knn knr krg kri krk krl krn krr krv kvb kvi kvk kvn kvr kvv lbb lbe lbg lbi lbk lbl lbr lbv leb lee leg lei lek lel len ler lev lgb lge lgg lgi lgk lgl lgn lgr lgv lib lie lig lii lik lil lin lir liv lkb lkg lkl lkr llb lle llg lli llk lll lln llr llv lnb lne lng lni lnk lnl lnn lnr lrb lrg lri lrk lrn lrr lrv lvb lve lvg lvi lvl lvn lvr lvv n-i nbb nbe nbg nbi nbk nbl nbn nbr nbv ne- neb nee neg nei nek nel nen ner nev ngb nge ngg ngi ngk ngl ngn nib nie nig nii nik nil nin nir niv nke nki nkk nkn nkr nlb nle nlg nli nlk nll nln nlr nlv nnb nne nng nni nnk nnl nnn nnv nrb nre nrg nri nrk nrl nrn nrr nrv nvb nve nvg nvi nvk nvl nvn nvv rbb rbe rbg rbi rbk rbl rbn rbr re- reb ree reg rei rek rel ren rer rev rgb rge rgg rgi rgk rgn rgr rgv rib rie rig rii rik ril rin rir riv rkb rke rkg rkk rkv rle rlg rli rll rln rlr rnb rng rni rnn rnr rnv rrb rrg rri rrk rrl rrn rrr rvb rve rvg rvi rvl rvn rvr rvv v-e vbg vbi vbk vbl vbr vbv veb vee veg vei vek vel ven ver vgg vgl vgn vgr vi- vib vie vig vii vik vil vin vir viv vkb vkg vl- vlb vle vlk vll vlv vn- vng vni vnl vnr vnv vrb vre vrg vri vrk vrn vrr vvb vvg vvi vvr vvv