-er -ey b-u bbb bbe bbg bbk bbr bbt bbu bby be- beb bee beg bek ber bet beu bey bgb bge bgg bgk bgr bgt bgu bkb bke bkg bkk bkr bkt brb bre brg brk brr brt bru bry btb bte btg btk btr btt btu bty bub bue bug buk bur but buu buy by- bye byg byk byr byt byu ebb ebe ebg ebk ebr ebt ebu eby eeb eee eeg eek eer eet eey egb ege egg egr egt egu egy ekb eke ekg ekr ekt eku eky erb ere erg erk err ert eru ery etb ete etg etk etr ett etu ety eu- eub eue eug eur eut eye eyr eyt gbe gbg gbk gbr gbt gbu gby ge- geb gee geg gek ger get geu gey ggb ggg ggr ggt ggu gkb gkt grb gre grg grk grr grt gru gry gtb gte gtg gtk gtr gtt gtu gty gu- gub gue gug guk gur gut guu guy gy- gyb gye gyr k-t kbb kbe kbk kbr kbu ke- keb kee keg kek ker ket key kgb kgu kgy kkb kke kkk kkr kkt kku kky krg krk krr krt kru kry ktb kte ktg ktk ktr ktt ktu kub kue kug kuk kur kut kuu kuy kye kyr kyt kyu rbb rbe rbg rbk rbr rbt rbu re- reb ree reg rek rer ret reu rey rgb rge rgg rgk rgr rgt rkb rke rkg rkk rkt rku rky rrb rrg rrk rrr rrt rru rtb rte rtg rtk rtr rtt rtu rty rub rue rug ruk rur rut ruu ruy ry- rye ryg ryk ryr ryu ryy tbb tbe tbg tbk tbr tbt tbu te- teb tee teg tek ter tet teu tey tgb tge tgg tgk tgr tgt tgu tgy tkb tke tkg tkk tkr tkt tky trb tre trg trk trr trt tru try ttb tte ttg ttk ttr ttt ttu tty tub tue tug tuk tur tut tuu tuy tye tyg tyr tyt ubb ube ubg ubk ubr ubt ubu uby ueb uee ueg uer uet uey ugb uge ugg ugk ugr ugt ugu ukb uke ukk ukr uku ur- urb ure urg urk urr urt uru ury utb ute utk utr utt utu uty uue uug uur uut uuu uyu ybe ybg ybr yby yeb yee yeg yek yer yet yey ykk yre yrg yrt yru yte ytk ytr ytt ytu yue yug yuk yur yut yuu yuy yyb yye yyg yyt yyu yyy