-er b-u bbb bbe bbi bbm bbo bbr bbs bbu be- beb bee bei bem beo ber bes beu bev bi- bib bie bii bim bio bir bis biu biv bmb bme bmi bmm bmo bmr bms bmu bmv bob boe boi bom boo bor bos bou bov brb bre bri brm bro brr brs bru brv bsb bse bsi bsm bso bsr bss bsu bsv bub bue bui bum buo bur bus buu bvb bve bvi bvm bvo bvr bvs bvu bvv ebb ebe ebi ebm ebo ebr ebs ebu ebv eeb eee eem eeo eer ees eev eib eie eii eim eio eir eis eiu eiv em- emb eme emi emm emo emr ems emu emv eo- eob eoe eoi eom eoo eor eos eou erb ere eri erm ero err ers eru erv es- esb ese esi esm eso esr ess esu esv eu- eub eue eui eur eus euv evb eve evi evm evo evr evs evv i-v ibb ibe ibi ibm ibo ibr ibs ibu ibv ie- iee iei iem ier ies iev iib iie iii iim iio iir iis iiu im- imb ime imi imm imo ims imu imv io- iob ioe ioi iom ioo ior ios iou iov ir- irb ire iri irm iro irr irs iru irv is- isb ise isi ism iso isr iss isu isv iu- iub iue iui ium iur ius ivb ive ivi ivo ivr ivs ivu ivv m-o m-r m-v mbb mbe mbi mbm mbo mbr mbs mbu mbv meb mee mei mem meo mer mes meu mev mi- mib mie mii mim mio mir mis miu miv mmb mme mmi mmm mmo mmr mms mmu mmv mob moe moi mom moo mor mos mou mov mrb mre mri mrm mro mrr mrs mru mrv msb mse msi msm mso msr mss msu msv mub mue mui mum mur mus muu mvb mve mvi mvm mvo mvr mvs mvv o-i ob- obb obe obi obm obo obr obs obu obv oeb oee oei oem oeo oer oes oib oie oii oim oio oir ois oiu oiv om- omb ome omi omm omo omr oms omu omv oo- oob ooi oom ooo oor oos oov or- orb ore ori orm oro orr ors oru orv os- osb ose osi osm oso osr oss osu osv ou- oue oui oum ouo our ous ov- ovb ove ovi ovo ovs ovv rbb rbe rbi rbm rbo rbr rbs rbu re- reb ree rei rem reo rer res reu rev rib rie rii rim rio rir ris riv rmb rme rmi rmm rmo rmr rms rmv rob roe roi rom roo ror ros rou rov rrb rri rrm rrr rrs rru rsb rse rsi rsm rso rsr rss rsu rsv rub rue rui rum ruo rur rus ruu ruv rvb rve rvi rvm rvo rvr rvs rvu rvv sbb sbe sbi sbm sbo sbr sbs sbu sbv se- seb see sei sem seo ser ses seu sev sib sie sii sim sio sir sis siu siv smb sme smi smm smo smr sms smu smv sob soe soi som soo sor sos sou sov sr- srb sre sri srm sro srr srs srv ss- ssb sse ssi ssm sso ssr sss ssu ssv sub sue sui sum suo sur sus suu suv svb sve svi svm svo svr svs svu svv ubb ube ubi ubo ubr ubs ubu ubv ueb uee uei uem uer ues uib uie uii uim uio uir uis uiu um- umb ume umi umm umo umr ums umu uob uoe uom uoo uor uos ur- urb ure uri urm uro urr urs uru usb use usi usm uso usr uss usu usv uue uum uur uus uuu uvb uve uvm uvo uvs uvu uvv v-e vbi vbm vbo vbr vbs vbv veb vee vei vem veo ver ves veu vi- vib vie vii vim vio vir vis viu viv vm- vmi vmm vmo vmr vmu vob voe voi vom voo vor vos vou vov vrb vre vri vrm vrr vrs vru vsb vse vsi vsm vso vsr vss vsu vsv vue vum vur vus vuv vvb vvi vvm vvo vvr vvs vvv