-er bbb bbc bbe bbm bbo bbr bbt bcb bcc bce bcm bco bcr bct be- beb bec bee bem beo ber bet bmb bmc bme bmm bmo bmr bmt bob boc boe bom boo bor bot brb bre brm bro brr brt btb btc bte btm bto btr btt c-- cbb cbc cbe cbm cbo cbr cbt ccb ccc cce ccm cco ccr cct ce- ceb cec cee cem ceo cer cet cmb cmc cme cmm cmo cmr cmt co- cob coc coe com coo cor cot crb crc cre crm cro crr crt ctb ctc cte ctm cto ctr ctt ebb ebc ebe ebm ebo ebr ebt ec- ecb ecc ece ecm eco ecr ect eeb eec eee eem eeo eer eet em- emb emc eme emm emo emr emt eo- eob eoc eoe eom eoo eor eot erb erc ere erm ero err ert etb etc ete etm eto etr ett m-o m-r mbb mbc mbe mbm mbo mbr mbt mc- mcb mcc mce mcm mco mcr mct meb mec mee mem meo mer met mmb mmc mme mmm mmo mmr mmt mob moc moe mom moo mor mot mrb mrc mre mrm mro mrr mrt mtb mtc mte mtm mto mtr mtt ob- obb obc obe obm obo obr obt oc- ocb occ ocm oco ocr oct oeb oec oee oem oeo oer oet om- omb omc ome omm omo omr omt oo- oob ooc oom ooo oor oot or- orb orc ore orm oro orr ort ot- otb otc ote otm oto otr ott rbb rbc rbe rbm rbo rbr rbt rcb rcc rce rcm rco rcr rct re- reb rec ree rem reo rer ret rmb rmc rme rmm rmo rmr rmt rob roc roe rom roo ror rot rrb rrc rrm rrr rrt rtb rtc rte rtm rto rtr rtt tbb tbc tbe tbm tbo tbr tbt tcb tcc tce tcm tco tcr tct te- teb tec tee tem teo ter tet tmb tmc tme tmm tmo tmr tmt to- tob toc toe tom too tor tot trb trc tre trm tro trr trt ttb ttc tte ttm tto ttr ttt

bbbb bbcm bbeb bbet bbrc bcbc bccc bccm bcec bcer bcet bcor bctc bebb bebe bebo beeb beem beer beet beme beo- beor beot berc bere berm bero berr bert betc bete beto bett bmce bmoc bmtc bobb bobe bobo boce bocm boco boec boee boeo boer boet bomb bome bomt boob booc booe boom boor boot bor- bore borm boro borr bort botb bote boto bott brcb brce breb brec bree brem breo brer bret brmc brob broc broe brom broo bror brot brrm brrr brtc btcc btec btob btor btrc btrt bttb c-bo cbbc cbcc cbce cbcm cbcr cbct cbec cbee cber cbet cbme cbot cbre cbrm cbrt cbtc ccbc cccb cccc cccm ccee ccmb ccmc ccmm ccob ccoc ccom ccrc ccre ccrt cctb cctc cctt cec- cece cecm ceco cect ceeb ceec ceem cemb ceme cemm cemr ceor cer- cerc cere cero cert cet- cete ceto cmbc cmcc cmec cmmb cmmc cmoc cmot cmrr cmtc cobb cobe cobo coce coco coct com- comb comc come comm como comr coob coom coot cor- corb corc core corm coro corr cort cotb cotc cote coto cott crbc crcc crce crcr cre- creb crec cree crem creo cret crmb crmo crob croc croe crom croo cror crot crrt crtc crtm ctec ctmo ctor ctot ctrc ctrm ebbc ebbo ebbr ebcc eber eboe eboo ebor ebro ecbc ecbe eccb eccc ecce eccm ecco ecct ecem eco- ecot ecrc ecrm ecrr ect- ectc ecto eeee eemo eeoc eerc eero eetc eete embe embo embr emcc emco emer emet emme emor emre emte eore eotc eoto erbb erbe ercc erce ereb erec erem erer eret ermc erme ermo erob eroc eroe eroo errc erre erro etbc etbr etcc etco etec etee etem eter etoe etre etrm etro ette etto mcbc mccc mcmc mcmt mcot mcrc mctc mebe mebo mec- mecc mece meco mecr meem meer meet memc meme memo memr meoc meor mer- merb merc mere merm mero mert met- mete meto mett mmcc mmcm mmct mmmc mmmm mmor mmrc mobb mobe mobo moco moet mome momo moob mooc mooe moor moot morb more moro mort motb mote motm moto mott mr-c mrbb mrbm mrcb mrcc mrce mreb mree mrmc mrrc mrtm mrtt mtbc mtbo mtcr mtoe mtom mtor mtrc mtre mtrr mttr o-eo obbo obec ober obet oboe obor obot obre obro ocbc occc occt oce ocee ocet ocom ocre ocro ocrr oct- octe octo oec- oecc oeec oeme oere oerm ombe ombo omee omeo omer omet omo- omoe omoo omor omre omro oobe oocr ooer oome oooo oore oort ootb orbb orbe orbo orce orco ore- oreb orec orem oreo orer orme ormo oro- oroe orom oror orot orro ortc orte orto otee otem oter oto- otoe otoo otor otre otro otte otto rbbb rbbr rcbc rcbo rccb rccc rcet rctc rebb rebe rebo recc rece recm recr rect reeb reem reet reme remo reot rere rero rert rete reto retr rett rob- robb robe robo robt rocc roce roco roer roet romb rome romm romo roob room roor root rorc rore roro rort rotc rote roto rotr rott rrmc rrrr rtcc rtce rtcm rtee rtmc t-mo tbcb tbcc tbce tbrb tccc tcom tctc tebo teco tecr tect teec teem teer teet teme temo teom teor ter- terc tere term tero terr tete teto tetr tett tmbc tmbr tmcc tmcm tmro tmtt tobe tobo tobt toce toco toee toer toet tomb tome tomm tomo tomt toom toor toot torc tore torm toro torr tort totc tote totm toto totr tott trcc tre- trec tree trem treo tret trmb troc troe trom troo trot trtc trte trtr ttbb tteo tter ttoe tttt

-tree bbbee be-er be-ro beber bebot becco beebe beete bembe bembo bemco bemer bemet beote berbe berec beret berme bermo berob beroe berom beror berre berte berto betee beter betoo betor betre