-er -ey -th bbb bbc bbe bbh bbn bbr bbt bby bcb bcc bce bch bcn bcr bct bcy be- beb bec bee beh ben ber bet bey bhb bhc bhe bhh bhr bht bnb bnc bne bnn bnr bnt brb bre brh brn brr brt bry btb btc bte bth btn btr btt bty by- byc bye byh byn byr byt c-- cbb cbc cbe cbh cbn cbr cbt cby ccb ccc cce cch ccn ccr cct ce- ceb cec cee ceh cen cer cet cey ch- chb chc che chh chn chr cht chy cn- cnb cnc cne cnh cnn cnr cnt cny crb crc cre crh crn crr crt cry ctb ctc cte cth ctn ctr ctt cty cyb cyc cye cyn cyr cyt ebb ebc ebe ebh ebn ebr ebt eby ec- ecb ecc ece ech ecn ecr ect eeb eec eee een eer eet eey ehb ehc ehe ehh ehn ehr eht en- enb enc ene enh enn enr ent eny erb erc ere erh ern err ert ery etb etc ete eth etn etr ett ety eyc eye eyn eyr eyt hbb hbc hbe hbh hbn hbr hbt hby hcb hcc hce hch hcn hcr hct hcy he- heb hec hee heh hen her het hey hhb hhc hhe hhh hhn hhr hht hhy hnb hnc hne hnh hnn hnt hny hr- hrb hrc hre hrh hrn hrr hrt htb htc hte hth htn htr htt hty hy- hyb hyc hye hyh hyn hyr hyt hyy nbb nbc nbe nbn nbr nbt ncb ncc nce nch ncn ncr nct ne- neb nec nee neh nen ner net ney nhb nhc nhe nhh nhn nhr nht nhy nnb nnc nne nnh nnn nnt nrb nrc nre nrn nrr nrt nry ntb ntc nte nth ntn ntr ntt nyc nye nyn nyt nyy rbb rbc rbe rbh rbn rbr rbt rcb rcc rce rch rcn rcr rct re- reb rec ree reh ren rer ret rey rh- rhb rhc rhe rhh rhn rhr rht rnb rnc rnh rnn rnr rnt rny rrb rrc rrh rrn rrr rrt rtb rtc rte rtn rtr rtt rty ry- ryc rye ryn ryr ryy tbb tbc tbe tbh tbn tbr tbt tcb tcc tce tch tcn tcr tct te- teb tec tee teh ten ter tet tey th- thb thc the thh thn thr tht thy tnb tnc tne tnh tnn tnr tnt trb trc tre trh trn trr trt try ttb ttc tte tth ttn ttr ttt tty tyc tye tyn tyr tyt ybc ybe ybr yby ycc yce ych ycy yeb yec yee yeh yen yer yet yey yhc yhe yht yne ynn yny yrc yre yrn yrt ytc yte yth ytn ytr ytt yyb yyc yye yyt yyy