-er bbb bbe bbg bbi bbk bbn bbr be- beb bee beg bei bek ben ber bev bgb bge bgg bgi bgk bgn bgr bgv bi- bib bie big bii bik bin bir biv bkb bke bkg bkk bkn bkr bkv bnb bne bng bni bnk bnn bnr bnv brb bre brg bri brk brn brr brv bvb bve bvg bvi bvk bvn bvr bvv ebb ebe ebg ebi ebk ebn ebr ebv eeb eee eeg eek een eer eev egb ege egg egi egn egr eib eie eig eii eik ein eir eiv ekb eke ekg eki ekr ekv en- enb ene eng eni enk enn enr env erb ere erg eri erk ern err erv evb eve evg evi evn evr evv gbe gbg gbi gbk gbn gbr gbv ge- geb gee geg gei gek gen ger gev ggb ggg ggi ggn ggr ggv gib gie gig gii gik gin gir giv gkb gkn gnb gne gni gnn gnr gnv grb gre grg gri grk grn grr grv gvb gve gvg gvi gvk gvn gvr i-v ibb ibe ibg ibi ibk ibn ibr ibv ie- iee ieg iei iek ien ier iev igb ige igg igi igk ign igr iib iie iii iin iir ikb ike iki ikk ikr ikv in- inb ine ing ini ink inn inr inv ir- irb ire irg iri irk irn irr irv ivb ive ivg ivi ivr ivv kbb kbe kbi kbk kbn kbr ke- keb kee keg kei kek ken ker kev kgb kgi kgv kib kie kig kii kik kin kir kiv kkb kke kki kkk kkn kkr kkv kn- kne kng kni knk knn knr krg kri krk krn krr krv kvb kvi kvk kvn kvr kvv n-i nbb nbe nbg nbi nbk nbn nbr nbv ne- neb nee neg nei nek nen ner nev ngb nge ngg ngi ngk ngn nib nie nig nii nik nin nir niv nke nki nkk nkn nkr nnb nne nng nni nnk nnn nnv nrb nre nrg nri nrk nrn nrr nrv nvb nve nvg nvi nvk nvn nvv rbb rbe rbg rbi rbk rbn rbr re- reb ree reg rei rek ren rer rev rgb rge rgg rgi rgk rgn rgr rgv rib rie rig rii rik rin rir riv rkb rke rkg rkk rkv rnb rng rni rnn rnr rnv rrb rrg rri rrk rrn rrr rvb rve rvg rvi rvn rvr rvv v-e vbg vbi vbk vbr vbv veb vee veg vei vek ven ver vgg vgn vgr vi- vib vie vig vii vik vin vir viv vkb vkg vn- vng vni vnr vnv vrb vre vrg vri vrk vrn vrr vvb vvg vvi vvr vvv