-er b-u bbb bbc bbe bbo bbr bbt bbu bbx bcb bcc bce bco bcr bct bcu bcx be- beb bec bee beo ber bet beu bex bob boc boe boo bor bot bou box brb bre bro brr brt bru brx btb btc bte bto btr btt btu btx bub buc bue buo bur but buu bux bxb bxo bxx c-- cbb cbc cbe cbo cbr cbt cbu cbx ccb ccc cce cco ccr cct ccu ccx ce- ceb cec cee ceo cer cet ceu cex co- cob coc coe coo cor cot cou cox crb crc cre cro crr crt cru crx ctb ctc cte cto ctr ctt ctu ctx cub cuc cue cuo cur cut cuu cxc cxo cxr cxt cxx ebb ebc ebe ebo ebr ebt ebu ebx ec- ecb ecc ece eco ecr ect ecu ecx eeb eec eee eeo eer eet eex eo- eob eoc eoe eoo eor eot eou erb erc ere ero err ert eru etb etc ete eto etr ett etu etx eu- eub euc eue eur eut eux ex- exc exe exo exr ext exu exx ob- obb obc obe obo obr obt obu obx oc- ocb occ oco ocr oct ocu ocx oeb oec oee oeo oer oet oex oo- oob ooc ooo oor oot oox or- orb orc ore oro orr ort oru orx ot- otb otc ote oto otr ott otu ou- ouc oue ouo our out ox- oxb oxc oxo oxt oxx rbb rbc rbe rbo rbr rbt rbu rbx rcb rcc rce rco rcr rct rcu rcx re- reb rec ree reo rer ret reu rex rob roc roe roo ror rot rou rox rrb rrc rrr rrt rru rtb rtc rte rto rtr rtt rtu rtx rub ruc rue ruo rur rut ruu rux rxr t-x tbb tbc tbe tbo tbr tbt tbu tcb tcc tce tco tcr tct tcu tcx te- teb tec tee teo ter tet teu tex to- tob toc toe too tor tot tou tox trb trc tre tro trr trt tru trx ttb ttc tte tto ttr ttt ttu ttx tub tuc tue tuo tur tut tuu tux txe txt txu ubb ubc ube ubo ubr ubt ubu ubx ucb ucc uce uco ucr uct ucu ueb uec uee uer uet uob uoc uoe uoo uor uot uox ur- urb urc ure uro urr urt uru urx utb utc ute uto utr utt utu utx uuc uue uur uut uuu uxb uxc uxo uxr uxt uxu xbc xbe xbr xbx xcb xcr xcx xee xer xet xeu xex xoc xoo xor xot xox xrc xrt xrx xtc xtr xtx xue xxo xxx

bbbb bbeb bbet bbox bbrc bcbc bccc bcec bcer bcet bcor bcru bctc bcuc bebb bebe bebo becu beeb beer beet beo- beor beot berc bere bero berr bert beru betc bete beto bett betu beur beux bobb bobe bobo bobu boce boco bocu boec boee boeo boer boet boob booc booe boor boot boox bor- bore boro borr bort boru botb bote boto bott boue bour bout brcb brce breb brec bree breo brer bret brex brob broc broe broo bror brot brou brox brrr brtc bruc brue brut brux btcc btcx btec btex btob btor btrc btrt bttb bubb bube bubo bubu bucc buce buco bucu buer bueu bur- burb bure buro burr burt buru but- bute buto butt c-bo cbbc cbcc cbce cbcr cbct cbcu cbec cbee cber cbet cbot cbox cbre cbrt cbtc cbux ccbc cccb cccc cccu ccee ccob ccoc ccrc ccre ccrt cctb cctc cctt ccuc ccut cebu cec- cece ceco cect ceeb ceec ceor ceou cer- cerc cere cero cert cet- cete ceto ceux cexe cobb cobe cobo cobu coce coco coct cocu coex coob coot cor- corb corc core coro corr cort cotb cotc cote coto cott cotu coub coue cour cout coux coxe crbc crbu crcc crce crcr cre- creb crec cree creo cret creu crex crob croc croe croo cror crot crrt crtc crub crue crut crux ctec ctor ctot ctrc cub- cubb cube cucc cuce cuer curb cure curo curr curt cut- cutc cute cuto cutt cxro cxxx ebbc ebbo ebbr ebcc eber eboe eboo ebor ebox ebro ebru ebur ecbc ecbe eccb eccc ecce ecco ecct eco- ecot ecou ecrc ecrr ecru ect- ectc ecto eeee eeoc eerc eero eetc eete eetu eext eore eotc eoto eoux er-x erbb erbe ercc erce ereb erec erer eret erob eroc eroe eroo errc erre erro ertu erub eruc erur etbc etbr etcc etco etec etee eter etoe etox etre etro ette etto ettu etux eubc euer eur- eurc eure euro eurt exco exec exer exo- exor exrx exte extr o-eo obbo obec ober obet obex oboe obor obot obox obre obro ocbc occc occt oce ocee ocet ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere oobe oocr ooer oooo oore oort ootb orbb orbe orbo orbu orce orco ore- oreb orec oreo orer orex oro- oroe oror orot orro ortc orte orto orub otee oter oto- otoe otoo otor otre otro otte otto ottu otur oucc ouer our- oure ouro ourt out- outb oute outo ouu- oxer oxo- oxox oxxo rbbb rbbr rcbc rcbo rccb rccc rcet rctc rebb rebe rebo rebu recc rece recr rect recu reeb reet reot reou rere rero rert reru rete reto retr rett reue reut reuu reux rexx rob- robb robe robo robt robu rocc roce roco roer roet roob roor root roox rorc rore roro rort roru rotc rote roto rotr rott roub roue rout roux roxo rrrr rtcc rtce rtee rtex rubb rube rubu ruce ruct ruer ruet rurc rure ruro ruru rute ruto rutt rutu tbcb tbcc tbce tbox tbrb tccc tccu tctc tebo tebu teco tecr tect teec teer teet teor ter- terc tere tero terr teru tete teto tetr tett tetu tetx teut text tobe tobo tobt tobu toce toco toee toer toet toor toot torc tore toro torr tort toru torx totc