-er -ic b-u bbb bbc bbe bbi bbo bbr bbt bbu bcb bcc bce bci bco bcr bct bcu be- beb bec bee bei beo ber bet beu bi- bib bic bie bii bio bir bit biu bob boc boe boi boo bor bot bou brb bre bri bro brr brt bru btb btc bte bti bto btr btt btu bub buc bue bui buo bur but buu c-- cbb cbc cbe cbi cbo cbr cbt cbu ccb ccc cce cci cco ccr cct ccu ce- ceb cec cee cei ceo cer cet ceu ci- cib cic cie cii cio cir cit ciu co- cob coc coe coi coo cor cot cou crb crc cre cri cro crr crt cru ctb ctc cte cti cto ctr ctt ctu cub cuc cue cui cuo cur cut cuu ebb ebc ebe ebi ebo ebr ebt ebu ec- ecb ecc ece eci eco ecr ect ecu eeb eec eee eeo eer eet eib eic eie eii eio eir eit eiu eo- eob eoc eoe eoi eoo eor eot eou erb erc ere eri ero err ert eru etb etc ete eti eto etr ett etu eu- eub euc eue eui eur eut ibb ibc ibe ibi ibo ibr ibt ibu icb icc ice ici ico icr ict icu ie- iec iee iei ier iet iib iic iie iii iio iir iit iiu io- iob ioc ioe ioi ioo ior iot iou ir- irb irc ire iri iro irr irt iru itb itc ite iti ito itt itu iu- iub iuc iue iui iur iut o-i ob- obb obc obe obi obo obr obt obu oc- ocb occ oci oco ocr oct ocu oeb oec oee oei oeo oer oet oib oic oie oii oio oir oit oiu oo- oob ooc ooi ooo oor oot or- orb orc ore ori oro orr ort oru ot- otb otc ote oti oto otr ott otu ou- ouc oue oui ouo our out rbb rbc rbe rbi rbo rbr rbt rbu rcb rcc rce rci rco rcr rct rcu re- reb rec ree rei reo rer ret reu rib ric rie rii rio rir rit rob roc roe roi roo ror rot rou rrb rrc rri rrr rrt rru rtb rtc rte rti rto rtr rtt rtu rub ruc rue rui ruo rur rut ruu tbb tbc tbe tbi tbo tbr tbt tbu tcb tcc tce tci tco tcr tct tcu te- teb tec tee tei teo ter tet teu tib tic tie tii tio tir tit tiu to- tob toc toe toi too tor tot tou trb trc tre tri tro trr trt tru ttb ttc tte tti tto ttr ttt ttu tub tuc tue tui tuo tur tut tuu ubb ubc ube ubi ubo ubr ubt ubu ucb ucc uce uci uco ucr uct ucu ueb uec uee uei uer uet uib uic uie uii uio uir uit uiu uob uoc uoe uoo uor uot ur- urb urc ure uri uro urr urt uru utb utc ute uti uto utr utt utu uuc uue uur uut uuu

bbbb bbci bbeb bbet bbrc bcbc bccc bcci bcec bcer bcet bcie bcit bcor bcru bctc bcuc bebb bebe bebi bebo beci becu beeb beer beet beic beir beit beo- beor beot berc bere beri bero berr bert beru betc bete beti beto bett betu beur bibb bibe bibi bibo bicc bice bici bico bieb bier biet bieu bio- bioc bioi biot biou birb bire biri biro birr birt biru bitc bite bito bitt bitu bobb bobe bobi bobo bobu boce boco bocu boec boee boeo boer boet boi- boie boii boit boiu boob booc booe boor boot bor- bore bori boro borr bort boru botb bote boti boto bott boue bour bout brcb brce breb brec bree brei breo brer bret bric brie brio brit brob broc broe broo bror brot brou brrr brtc bruc brue brut btcc btec btie btob btor btrc btrt bttb bubb bube bubi bubo bubu bucc buce buci buco bucu buer bueu buic buie buir buit buiu bur- burb bure buri buro burr burt buru but- bute buti buto butt c-bo cbbc cbcc cbce cbcr cbct cbcu cbec cbee cber cbet cbir cbit cbot cbre cbrt cbtc ccbc cccb cccc ccci cccu ccee ccic ccii ccir ccob ccoc ccrc ccre ccri ccrt cctb cctc cctt ccuc ccut cebu cec- cece ceci ceco cect ceeb ceec ceor ceou cer- cerc cere ceri cero cert cet- cete ceti ceto ceui cibc cibe cibi cibo cicc cici cico cicr cict cicu ciee cier ciii ciit ciob cior cirb circ cire ciri ciro cirr cirt citb cite citi cito citt citu ciuc cobb cobe cobi cobo cobu coce coco coct cocu coir coit coob coot cor- corb corc core cori coro corr cort cotb cotc cote coti coto cott cotu coub coue cour cout crbc crbu crcc crce crcr cre- creb crec cree crei creo cret creu crib cric crie crit criu crob croc croe croo cror crot crrt crtc crub crue crut ctbi ctec ctic ctor ctot ctrc cub- cubb cube cubi cucc cuce cuci cuer cui- cuir cuit curb cure curi curo curr curt cut- cutc cute cuto cutt ebbc ebbo ebbr ebcc eber ebic ebit eboe eboo ebor ebro ebru ebur ecbc ecbe eccb eccc ecce ecci ecco ecct ecib ecit eco- ecot ecou ecrc ecri ecrr ecru ect- ectc ecto eeee eeoc eerc eero eetc eete eetu eico eiec eiei eier eiou eire eitb eitc eiti eito eitr eoir eore eori eotc eoto erbb erbe ercc erce ereb erec erei erer eret eric erie erio erit eriu erob eroc eroe eroi eroo errc erre erro ertu erub eruc erur etbc etbr etcc etco etec etee eter etic etio etoe etre etro ette etti etto ettu etui eubc eubi euer euoi eur- eurc eure euro eurt i-be ibec ibet ibie ibot ibrc ibri ibro ibtb ibtc icbc iccb iccc icci icco iccr icct iccu icec icee icer icet icoc icor icrc icre icrr