-er b-u bbb bbe bbi bbl bbn bbr bbt bbu be- beb bee bei bel ben ber bet beu bev bi- bib bie bii bil bin bir bit biu biv blb ble bli bll bln blr blt blu blv bnb bne bni bnl bnn bnr bnt bnu bnv brb bre bri brl brn brr brt bru brv btb bte bti btl btn btr btt btu btv bub bue bui bul bun bur but buu bvb bve bvi bvl bvn bvr bvt bvu bvv ebb ebe ebi ebl ebn ebr ebt ebu ebv eeb eee eel een eer eet eev eib eie eii eil ein eir eit eiu eiv elb ele eli ell eln elr elt elu elv en- enb ene eni enl enn enr ent enu env erb ere eri erl ern err ert eru erv etb ete eti etl etn etr ett etu etv eu- eub eue eui eul eun eur eut euv evb eve evi evl evn evr evt evv i-v ibb ibe ibi ibl ibn ibr ibt ibu ibv ie- iee iei iel ien ier iet iev iib iie iii iil iin iir iit iiu il- ilb ile ili ill iln ilr ilt ilu ilv in- inb ine ini inl inn inr int inu inv ir- irb ire iri irl irn irr irt iru irv itb ite iti itl itn itt itu itv iu- iub iue iui iur iut ivb ive ivi ivl ivr ivt ivu ivv lbb lbe lbi lbl lbr lbt lbu lbv leb lee lei lel len ler let leu lev lib lie lii lil lin lir lit liu liv llb lle lli lll lln llr llt llu llv lnb lne lni lnl lnn lnr lnt lnu lrb lri lrn lrr lrt lru lrv ltb lte lti ltl ltr ltt ltu ltv lub lue lui lul lun lur lut luu luv lvb lve lvi lvl lvn lvr lvt lvv n-i nbb nbe nbi nbl nbn nbr nbt nbu nbv ne- neb nee nei nel nen ner net neu nev nib nie nii nil nin nir nit niu niv nlb nle nli nll nln nlr nlt nlu nlv nnb nne nni nnl nnn nnt nnu nnv nrb nre nri nrl nrn nrr nrt nru nrv ntb nte nti ntn ntr ntt ntu ntv nub nue nui nul nun nur nut nuu nuv nvb nve nvi nvl nvn nvt nvu nvv rbb rbe rbi rbl rbn rbr rbt rbu re- reb ree rei rel ren rer ret reu rev rib rie rii ril rin rir rit riv rle rli rll rln rlr rlt rlu rnb rni rnn rnr rnt rnu rnv rrb rri rrl rrn rrr rrt rru rtb rte rti rtl rtn rtr rtt rtu rtv rub rue rui run rur rut ruu ruv rvb rve rvi rvl rvn rvr rvt rvu rvv tbb tbe tbi tbl tbn tbr tbt tbu tbv te- teb tee tei tel ten ter tet teu tev tib tie tii til tin tir tit tiu tiv tle tli tll tln tlr tlt tlu tlv tnb tne tni tnl tnn tnr tnt trb tre tri trl trn trr trt tru trv ttb tte tti ttl ttn ttr ttt ttu ttv tub tue tui tul tun tur tut tuu tuv tvb tve tvi tvl tvn tvr tvt tvu ubb ube ubi ubl ubn ubr ubt ubu ubv ueb uee uei uel uen uer uet uib uie uii uil uin uir uit uiu ulb ule uli ull uln ulr ult ulu ulv un- unb une uni unl unn unr unt unu unv ur- urb ure uri url urn urr urt uru utb ute uti utl utn utr utt utu utv uue uun uur uut uuu uvb uve uvl uvu uvv v-e vbi vbl vbr vbv veb vee vei vel ven ver vet veu vi- vib vie vii vil vin vir vit viu viv vl- vlb vle vll vlt vlv vn- vni vnl vnr vnu vnv vrb vre vri vrn vrr vrt vru vtb vte vti vtl vtr vtt vtu vtv vue vul vur vut vuv vvb vvi vvr vvt vvv