-er bbb bbe bbi bbm bbo bbr bbt be- beb bee bei bem beo ber bet bi- bib bie bii bim bio bir bit bmb bme bmi bmm bmo bmr bmt bob boe boi bom boo bor bot brb bre bri brm bro brr brt btb bte bti btm bto btr btt ebb ebe ebi ebm ebo ebr ebt eeb eee eem eeo eer eet eib eie eii eim eio eir eit em- emb eme emi emm emo emr emt eo- eob eoe eoi eom eoo eor eot erb ere eri erm ero err ert etb ete eti etm eto etr ett ibb ibe ibi ibm ibo ibr ibt ie- iee iei iem ier iet iib iie iii iim iio iir iit im- imb ime imi imm imo imt io- iob ioe ioi iom ioo ior iot ir- irb ire iri irm iro irr irt itb ite iti itm ito itt m-o m-r mbb mbe mbi mbm mbo mbr mbt meb mee mei mem meo mer met mi- mib mie mii mim mio mir mit mmb mme mmi mmm mmo mmr mmt mob moe moi mom moo mor mot mrb mre mri mrm mro mrr mrt mtb mte mti mtm mto mtr mtt o-i ob- obb obe obi obm obo obr obt oeb oee oei oem oeo oer oet oib oie oii oim oio oir oit om- omb ome omi omm omo omr omt oo- oob ooi oom ooo oor oot or- orb ore ori orm oro orr ort ot- otb ote oti otm oto otr ott rbb rbe rbi rbm rbo rbr rbt re- reb ree rei rem reo rer ret rib rie rii rim rio rir rit rmb rme rmi rmm rmo rmr rmt rob roe roi rom roo ror rot rrb rri rrm rrr rrt rtb rte rti rtm rto rtr rtt tbb tbe tbi tbm tbo tbr tbt te- teb tee tei tem teo ter tet tib tie tii tim tio tir tit tmb tme tmi tmm tmo tmr tmt to- tob toe toi tom too tor tot trb tre tri trm tro trr trt ttb tte tti ttm tto ttr ttt

bbbb bbeb bbet bebb bebe bebi bebo beeb beem beer beet beim beir beit beme beo- beor beot bere beri berm bero berr bert bete beti beto bett bibb bibe bibi bibo bieb bier biet bimo bio- bioi biot birb bire biri biro birr birt bite bito bitt bmir bmmi bobb bobe bobi bobo boee boeo boer boet boi- boie boii boim boit bomb bome bomi bomt boob booe boom boor boot bor- bore bori borm boro borr bort botb bote boti boto bott breb bree brei brem breo brer bret brie brim brio brit brob broe brom broo bror brot brrm brrr btie btob btor btrt bttb ebbo ebbr eber ebit eboe eboo ebor ebro eeee eemo eero eete eiei eier eime eimi eire eitb eiti eitm eito eitr embe embi embo embr emer emet emii emim emir emit emme emmi emor emre emte eoir eore eori eoto erbb erbe ereb erei erem erer eret erie erim erio erit erme ermo erob eroe eroi eroo erre erro etbr etee etem eter etim etio etoe etre etrm etro ette etti etto i-be ibbm ibet ibie ibim ibot ibri ibro ibtb ieet ieie ieio ieme iere ieri ietm iett iiie iiii iiio iiit iioi iioo iitm iitr iitt imbe imbi imer imet imir imit imme immi immo immt imre imri imro imrr imto iobi ioee ioii ioio ioit iome iomo iooi iooo iore iori iote ioto irbe irbm iree irem irer iri- irie irio irmo irob irre irri irte irti itbe item iter itet itie itim itme itmo itoi itoo itor itri itto mbim mbio mebe mebo meem meer meet meir meit meme memo memr meor mer- merb mere meri merm mero mert met- mete meti meto mett miee miem mier miet miii miio miit mim- mime mimi mimo mio- mire miri miro mirr mirt mit- mitb mite miti mitm mito mitt mmii mmmm mmor mobb mobe mobi mobo moet moii moio moir moit mome momi momo moob mooe moor moot morb more mori moro mort motb mote moti motm moto mott mrbb mrbm mreb mree mrtm mrtt mtbo mtoe mtom mtor mtre mtrr mttr o-eo obbo ober obet obie obit oboe oboi obor obot obre obri obro oeme oere oerm oeti oier oiii oimb oime oire oirt oiti ombe ombo omee omei omeo omer omet omie omim omio omit omo- omoe omoi omoo omor omre omri omro oobe oobi ooer oome oooo oore oort ootb orbb orbe orbi orbo ore- oreb orem oreo orer ori- orie orio orit orme ormo oro- oroe orom oror orot orri orro orte orto otee otem oter otit oto- otoe otoo otor otre otro otte otti otto rbbb rbbr rebb rebe rebo reeb reem reet reii reim reir reit reme remi remo reot rere reri rero rert rete reti reto retr rett rib- ribe ribo riem rier riet rime rimi rimm rimo riom riot rire riri rite riti rito ritt rob- robb robe robi robo robt roer roet roio roir roit romb rome romi romm romo roob rooi room roor root rore rori roro rort rote roti roto rotr rott rrrr rtee rtei rtmi t-mo tbit tbrb tebo teem teer teet teie teim teir teme temo teom teor ter- tere teri term tero terr tete teti teto tetr tett tibi tie- tiee tiei tieo tier tiet tiit time timi timm timo tirb tire tiri tiro tirr tite titi tito titt tmbr tmro tmtt tobe tobi tobo tobt toee toei toer toet toie toit tomb tome tomi tomm tomo tomt toom toor toot tore tori torm toro torr tort tote toti totm toto totr tott tre- tree trei trem treo tret tri- trib trie trim trio trit trmb trmi troe troi trom troo trot trte trtr ttbb tteo tter ttim ttoe tttt

-tree bbbee be-er be-ro beber bebot bebti beebe beeri beete beibi beier beire beite bembe bembo bemer bemet