-er -ey -ic bbb bbc bbe bbi bbr bbt bby bcb bcc bce bci bcr bct bcy be- beb bec bee bei ber bet bey bi- bib bic bie bii bir bit biy brb bre bri brr brt bry btb btc bte bti btr btt bty by- byc bye byi byr byt c-- cbb cbc cbe cbi cbr cbt cby ccb ccc cce cci ccr cct ce- ceb cec cee cei cer cet cey ci- cib cic cie cii cir cit crb crc cre cri crr crt cry ctb ctc cte cti ctr ctt cty cyb cyc cye cyr cyt ebb ebc ebe ebi ebr ebt eby ec- ecb ecc ece eci ecr ect eeb eec eee eer eet eey eib eic eie eii eir eit erb erc ere eri err ert ery etb etc ete eti etr ett ety eyc eye eyr eyt ibb ibc ibe ibi ibr ibt iby icb icc ice ici icr ict icy ie- iec iee iei ier iet iey iib iic iie iii iir iit ir- irb irc ire iri irr irt iry itb itc ite iti itt ity iyc iye iyr iyt iyy rbb rbc rbe rbi rbr rbt rcb rcc rce rci rcr rct re- reb rec ree rei rer ret rey rib ric rie rii rir rit riy rrb rrc rri rrr rrt rtb rtc rte rti rtr rtt rty ry- ryc rye ryr ryy tbb tbc tbe tbi tbr tbt tcb tcc tce tci tcr tct te- teb tec tee tei ter tet tey tib tic tie tii tir tit tiy trb trc tre tri trr trt try ttb ttc tte tti ttr ttt tty tyc tye tyr tyt ybc ybe ybi ybr yby ycc yce yci ycy yeb yec yee yei yer yet yey yie yii yir yit yrc yre yrt ytc yte ytr ytt yyb yyc yye yyt yyy