-er -ey b-u bbb bbc bbe bbn bbo bbr bbt bbu bby bcb bcc bce bcn bco bcr bct bcu bcy be- beb bec bee ben beo ber bet beu bey bnb bnc bne bnn bno bnr bnt bnu bob boc boe bon boo bor bot bou boy brb bre brn bro brr brt bru bry btb btc bte btn bto btr btt btu bty bub buc bue bun buo bur but buu buy by- byc bye byn byo byr byt byu c-- cbb cbc cbe cbn cbo cbr cbt cbu cby ccb ccc cce ccn cco ccr cct ccu ce- ceb cec cee cen ceo cer cet ceu cey cn- cnb cnc cne cnn cno cnr cnt cnu cny co- cob coc coe con coo cor cot cou coy crb crc cre crn cro crr crt cru cry ctb ctc cte ctn cto ctr ctt ctu cty cub cuc cue cun cuo cur cut cuu cuy cyb cyc cye cyn cyo cyr cyt ebb ebc ebe ebn ebo ebr ebt ebu eby ec- ecb ecc ece ecn eco ecr ect ecu eeb eec eee een eeo eer eet eey en- enb enc ene enn eno enr ent enu eny eo- eob eoc eoe eon eoo eor eot eou erb erc ere ern ero err ert eru ery etb etc ete etn eto etr ett etu ety eu- eub euc eue eun eur eut eyc eye eyn eyo eyr eyt nbb nbc nbe nbn nbo nbr nbt nbu ncb ncc nce ncn nco ncr nct ncu ne- neb nec nee nen neo ner net neu ney nnb nnc nne nnn nno nnt nnu no- nob noc noe non noo nor not nou noy nrb nrc nre nrn nro nrr nrt nru nry ntb ntc nte ntn nto ntr ntt ntu nub nuc nue nun nuo nur nut nuu nuy nyc nye nyn nyo nyt nyu nyy ob- obb obc obe obn obo obr obt obu oby oc- ocb occ ocn oco ocr oct ocu oeb oec oee oen oeo oer oet oey on- onb onc one onn ono onr ont onu ony oo- oob ooc oon ooo oor oot or- orb orc ore orn oro orr ort oru ory ot- otb otc ote otn oto otr ott otu ou- ouc oue oun ouo our out oye oyo rbb rbc rbe rbn rbo rbr rbt rbu rcb rcc rce rcn rco rcr rct rcu re- reb rec ree ren reo rer ret reu rey rnb rnc rnn rno rnr rnt rnu rny rob roc roe ron roo ror rot rou roy rrb rrc rrn rrr rrt rru rtb rtc rte rtn rto rtr rtt rtu rty rub ruc rue run ruo rur rut ruu ruy ry- ryc rye ryn ryo ryr ryu ryy tbb tbc tbe tbn tbo tbr tbt tbu tcb tcc tce tcn tco tcr tct tcu te- teb tec tee ten teo ter tet teu tey tnb tnc tne tnn tno tnr tnt to- tob toc toe ton too tor tot tou toy trb trc tre trn tro trr trt tru try ttb ttc tte ttn tto ttr ttt ttu tty tub tuc tue tun tuo tur tut tuu tuy tyc tye tyn tyo tyr tyt ubb ubc ube ubn ubo ubr ubt ubu uby ucb ucc uce ucn uco ucr uct ucu ueb uec uee uen uer uet uey un- unb unc une unn uno unr unt unu uny uob uoc uoe uon uoo uor uot ur- urb urc ure urn uro urr urt uru ury utb utc ute utn uto utr utt utu uty uuc uue uun uur uut uuu uyc uyo uyu ybc ybe ybr yby ycc yce yco ycu ycy yeb yec yee yen yeo yer yet yey yne ynn ynu yny yob yoc yoe yon yoo yor yot you yoy yrc yre yrn yro yrt yru ytc yte ytn yto ytr ytt ytu yue yun yuo yur yut yuu yuy yyb yyc yye yyt yyu yyy