-er b-u bbb bbe bbi bbl bbn bbr bbu be- beb bee bei bel ben ber beu bev bi- bib bie bii bil bin bir biu biv blb ble bli bll bln blr blu blv bnb bne bni bnl bnn bnr bnu bnv brb bre bri brl brn brr bru brv bub bue bui bul bun bur buu bvb bve bvi bvl bvn bvr bvu bvv ebb ebe ebi ebl ebn ebr ebu ebv eeb eee eel een eer eev eib eie eii eil ein eir eiu eiv elb ele eli ell eln elr elu elv en- enb ene eni enl enn enr enu env erb ere eri erl ern err eru erv eu- eub eue eui eul eun eur euv evb eve evi evl evn evr evv i-v ibb ibe ibi ibl ibn ibr ibu ibv ie- iee iei iel ien ier iev iib iie iii iil iin iir iiu il- ilb ile ili ill iln ilr ilu ilv in- inb ine ini inl inn inr inu inv ir- irb ire iri irl irn irr iru irv iu- iub iue iui iur ivb ive ivi ivl ivr ivu ivv lbb lbe lbi lbl lbr lbu lbv leb lee lei lel len ler leu lev lib lie lii lil lin lir liu liv llb lle lli lll lln llr llu llv lnb lne lni lnl lnn lnr lnu lrb lri lrn lrr lru lrv lub lue lui lul lun lur luu luv lvb lve lvi lvl lvn lvr lvv n-i nbb nbe nbi nbl nbn nbr nbu nbv ne- neb nee nei nel nen ner neu nev nib nie nii nil nin nir niu niv nlb nle nli nll nln nlr nlu nlv nnb nne nni nnl nnn nnu nnv nrb nre nri nrl nrn nrr nru nrv nub nue nui nul nun nur nuu nuv nvb nve nvi nvl nvn nvu nvv rbb rbe rbi rbl rbn rbr rbu re- reb ree rei rel ren rer reu rev rib rie rii ril rin rir riv rle rli rll rln rlr rlu rnb rni rnn rnr rnu rnv rrb rri rrl rrn rrr rru rub rue rui run rur ruu ruv rvb rve rvi rvl rvn rvr rvu rvv ubb ube ubi ubl ubn ubr ubu ubv ueb uee uei uel uen uer uib uie uii uil uin uir uiu ulb ule uli ull uln ulr ulu ulv un- unb une uni unl unn unr unu unv ur- urb ure uri url urn urr uru uue uun uur uuu uvb uve uvl uvu uvv v-e vbi vbl vbr vbv veb vee vei vel ven ver veu vi- vib vie vii vil vin vir viu viv vl- vlb vle vll vlv vn- vni vnl vnr vnu vnv vrb vre vri vrn vrr vru vue vul vur vuv vvb vvi vvr vvv