-er -ey b-u bbb bbc bbe bbn bbo bbr bbu bbx bby bcb bcc bce bcn bco bcr bcu bcx bcy be- beb bec bee ben beo ber beu bex bey bnb bnc bne bnn bno bnr bnu bnx bob boc boe bon boo bor bou box boy brb bre brn bro brr bru brx bry bub buc bue bun buo bur buu bux buy bxb bxn bxo bxx by- byc bye byn byo byr byu c-- cbb cbc cbe cbn cbo cbr cbu cbx cby ccb ccc cce ccn cco ccr ccu ccx ce- ceb cec cee cen ceo cer ceu cex cey cn- cnb cnc cne cnn cno cnr cnu cnx cny co- cob coc coe con coo cor cou cox coy crb crc cre crn cro crr cru crx cry cub cuc cue cun cuo cur cuu cuy cxc cxo cxr cxx cyb cyc cye cyn cyo cyr ebb ebc ebe ebn ebo ebr ebu ebx eby ec- ecb ecc ece ecn eco ecr ecu ecx eeb eec eee een eeo eer eex eey en- enb enc ene enn eno enr enu eny eo- eob eoc eoe eon eoo eor eou erb erc ere ern ero err eru ery eu- eub euc eue eun eur eux ex- exc exe exo exr exu exx exy eyc eye eyn eyo eyr nbb nbc nbe nbn nbo nbr nbu nbx ncb ncc nce ncn nco ncr ncu ncx ne- neb nec nee nen neo ner neu nex ney nnb nnc nne nnn nno nnu no- nob noc noe non noo nor nou nox noy nrb nrc nre nrn nro nrr nru nrx nry nub nuc nue nun nuo nur nuu nux nuy nxc nyc nye nyn nyo nyu nyx nyy ob- obb obc obe obn obo obr obu obx oby oc- ocb occ ocn oco ocr ocu ocx oeb oec oee oen oeo oer oex oey on- onb onc one onn ono onr onu onx ony oo- oob ooc oon ooo oor oox or- orb orc ore orn oro orr oru orx ory ou- ouc oue oun ouo our ox- oxb oxc oxn oxo oxx oxy oye oyo rbb rbc rbe rbn rbo rbr rbu rbx rcb rcc rce rcn rco rcr rcu rcx re- reb rec ree ren reo rer reu rex rey rnb rnc rnn rno rnr rnu rny rob roc roe ron roo ror rou rox roy rrb rrc rrn rrr rru rub ruc rue run ruo rur ruu rux ruy rxr ry- ryc rye ryn ryo ryr ryu ryy ubb ubc ube ubn ubo ubr ubu ubx uby ucb ucc uce ucn uco ucr ucu ueb uec uee uen uer uey un- unb unc une unn uno unr unu unx uny uob uoc uoe uon uoo uor uox ur- urb urc ure urn uro urr uru urx ury uuc uue uun uur uuu uxb uxc uxo uxr uxu uyc uyo uyu xbc xbe xbr xbx xcb xcr xcx xee xen xer xeu xex xnc xno xnu xoc xon xoo xor xox xrc xrx xry xue xun xxo xxx xxy xyr xyy ybc ybe ybr yby ycc yce yco ycu ycy yeb yec yee yen yeo yer yex yey yne ynn ynu yny yob yoc yoe yon yoo yor you yox yoy yrc yre yrn yro yru yue yun yuo yur yuu yux yuy yxe yxy yyb yyc yye yyu yyy