-er b-u bbb bbe bbi bbn bbr bbs bbu be- beb bee bei ben ber bes beu bev bi- bib bie bii bin bir bis biu biv bnb bne bni bnn bnr bns bnu bnv brb bre bri brn brr brs bru brv bsb bse bsi bsn bsr bss bsu bsv bub bue bui bun bur bus buu bvb bve bvi bvn bvr bvs bvu bvv ebb ebe ebi ebn ebr ebs ebu ebv eeb eee een eer ees eev eib eie eii ein eir eis eiu eiv en- enb ene eni enn enr ens enu env erb ere eri ern err ers eru erv es- esb ese esi esn esr ess esu esv eu- eub eue eui eun eur eus euv evb eve evi evn evr evs evv i-v ibb ibe ibi ibn ibr ibs ibu ibv ie- iee iei ien ier ies iev iib iie iii iin iir iis iiu in- inb ine ini inn inr ins inu inv ir- irb ire iri irn irr irs iru irv is- isb ise isi isn isr iss isu isv iu- iub iue iui iur ius ivb ive ivi ivr ivs ivu ivv n-i nbb nbe nbi nbn nbr nbs nbu nbv ne- neb nee nei nen ner nes neu nev nib nie nii nin nir nis niu niv nnb nne nni nnn nns nnu nnv nrb nre nri nrn nrr nrs nru nrv nsb nse nsi nsn nsr nss nsu nsv nub nue nui nun nur nus nuu nuv nvb nve nvi nvn nvu nvv rbb rbe rbi rbn rbr rbs rbu re- reb ree rei ren rer res reu rev rib rie rii rin rir ris riv rnb rni rnn rnr rns rnu rnv rrb rri rrn rrr rrs rru rsb rse rsi rsn rsr rss rsu rsv rub rue rui run rur rus ruu ruv rvb rve rvi rvn rvr rvs rvu rvv sbb sbe sbi sbn sbr sbs sbu sbv se- seb see sei sen ser ses seu sev sib sie sii sin sir sis siu siv snb sne sni snn snr sns snu snv sr- srb sre sri srn srr srs srv ss- ssb sse ssi ssn ssr sss ssu ssv sub sue sui sun sur sus suu suv svb sve svi svn svr svs svu svv ubb ube ubi ubn ubr ubs ubu ubv ueb uee uei uen uer ues uib uie uii uin uir uis uiu un- unb une uni unn unr uns unu unv ur- urb ure uri urn urr urs uru usb use usi usn usr uss usu usv uue uun uur uus uuu uvb uve uvs uvu uvv v-e vbi vbr vbs vbv veb vee vei ven ver ves veu vi- vib vie vii vin vir vis viu viv vn- vni vnr vns vnu vnv vrb vre vri vrn vrr vrs vru vsb vse vsi vsn vsr vss vsu vsv vue vur vus vuv vvb vvi vvr vvs vvv