-er -ey b-u bbb bbc bbe bbh bbk bbr bbu bby bcb bcc bce bch bck bcr bcu bcy be- beb bec bee beh bek ber beu bey bhb bhc bhe bhh bhk bhr bhu bkb bkc bke bkk bkr brb bre brh brk brr bru bry bub buc bue buh buk bur buu buy by- byc bye byh byk byr byu c-- cbb cbc cbe cbh cbk cbr cbu cby ccb ccc cce cch cck ccr ccu ce- ceb cec cee ceh cek cer ceu cey ch- chb chc che chh chk chr chu chy ckb ckc ckh cky crb crc cre crh crk crr cru cry cub cuc cue cuh cuk cur cuu cuy cyb cyc cye cyk cyr ebb ebc ebe ebh ebk ebr ebu eby ec- ecb ecc ece ech eck ecr ecu eeb eec eee eek eer eey ehb ehc ehe ehh ehr ehu ekb ekc eke ekh ekr eku eky erb erc ere erh erk err eru ery eu- eub euc eue eur eyc eye eyr hbb hbc hbe hbh hbk hbr hbu hby hcb hcc hce hch hck hcr hcy he- heb hec hee heh hek her heu hey hhb hhc hhe hhh hhk hhr hhu hhy hkb hkh hkk hkr hku hr- hrb hrc hre hrh hrk hrr hru hub huc hue huh huk hur huu huy hy- hyb hyc hye hyh hyr hyy kbb kbc kbe kbh kbk kbr kbu kcb kcc kce kch kck kcr kcu ke- keb kec kee keh kek ker key khe khh khk khr khu kkb kkc kke kkh kkk kkr kku kky krc krk krr kru kry kub kuc kue kuh kuk kur kuu kuy kyc kye kyr kyu rbb rbc rbe rbh rbk rbr rbu rcb rcc rce rch rcr rcu re- reb rec ree reh rek rer reu rey rh- rhb rhc rhe rhh rhr rhu rkb rkc rke rkk rku rky rrb rrc rrh rrk rrr rru rub ruc rue ruh ruk rur ruu ruy ry- ryc rye ryk ryr ryu ryy ubb ubc ube ubh ubk ubr ubu uby ucb ucc uce uch uck ucr ucu ueb uec uee ueh uer uey uhb uhc uhe uhh uhr uhu uhy ukb ukc uke ukk ukr uku ur- urb urc ure urk urr uru ury uuc uue uur uuu uyc uyu ybc ybe ybr yby ycc yce ych ycu ycy yeb yec yee yeh yek yer yey yhc yhe yhu ykk yrc yre yru yue yuh yuk yur yuu yuy yyb yyc yye yyu yyy