-er b-u bbb bbe bbi bbm bbo bbr bbt bbu be- beb bee bei bem beo ber bet beu bi- bib bie bii bim bio bir bit biu bmb bme bmi bmm bmo bmr bmt bmu bob boe boi bom boo bor bot bou brb bre bri brm bro brr brt bru btb bte bti btm bto btr btt btu bub bue bui bum buo bur but buu ebb ebe ebi ebm ebo ebr ebt ebu eeb eee eem eeo eer eet eib eie eii eim eio eir eit eiu em- emb eme emi emm emo emr emt emu eo- eob eoe eoi eom eoo eor eot eou erb ere eri erm ero err ert eru etb ete eti etm eto etr ett etu eu- eub eue eui eur eut ibb ibe ibi ibm ibo ibr ibt ibu ie- iee iei iem ier iet iib iie iii iim iio iir iit iiu im- imb ime imi imm imo imt imu io- iob ioe ioi iom ioo ior iot iou ir- irb ire iri irm iro irr irt iru itb ite iti itm ito itt itu iu- iub iue iui ium iur iut m-o m-r mbb mbe mbi mbm mbo mbr mbt mbu meb mee mei mem meo mer met meu mi- mib mie mii mim mio mir mit miu mmb mme mmi mmm mmo mmr mmt mmu mob moe moi mom moo mor mot mou mrb mre mri mrm mro mrr mrt mru mtb mte mti mtm mto mtr mtt mtu mub mue mui mum mur mut muu o-i ob- obb obe obi obm obo obr obt obu oeb oee oei oem oeo oer oet oib oie oii oim oio oir oit oiu om- omb ome omi omm omo omr omt omu oo- oob ooi oom ooo oor oot or- orb ore ori orm oro orr ort oru ot- otb ote oti otm oto otr ott otu ou- oue oui oum ouo our out rbb rbe rbi rbm rbo rbr rbt rbu re- reb ree rei rem reo rer ret reu rib rie rii rim rio rir rit rmb rme rmi rmm rmo rmr rmt rob roe roi rom roo ror rot rou rrb rri rrm rrr rrt rru rtb rte rti rtm rto rtr rtt rtu rub rue rui rum ruo rur rut ruu tbb tbe tbi tbm tbo tbr tbt tbu te- teb tee tei tem teo ter tet teu tib tie tii tim tio tir tit tiu tmb tme tmi tmm tmo tmr tmt tmu to- tob toe toi tom too tor tot tou trb tre tri trm tro trr trt tru ttb tte tti ttm tto ttr ttt ttu tub tue tui tum tuo tur tut tuu ubb ube ubi ubo ubr ubt ubu ueb uee uei uem uer uet uib uie uii uim uio uir uit uiu um- umb ume umi umm umo umr umt umu uob uoe uom uoo uor uot ur- urb ure uri urm uro urr urt uru utb ute uti utm uto utr utt utu uue uum uur uut uuu