-er -ey -ic bbb bbc bbd bbe bbi bbk bbr bby bcb bcc bcd bce bci bck bcr bcy bdb bdc bdd bde bdi bdk bdr bdy be- beb bec bed bee bei bek ber bey bi- bib bic bid bie bii bik bir biy bkb bkc bke bkk bkr brb brd bre bri brk brr bry by- byc byd bye byi byk byr c-- cbb cbc cbd cbe cbi cbk cbr cby ccb ccc ccd cce cci cck ccr cdb cdc cdd cde cdi cdk cdr cdy ce- ceb cec ced cee cei cek cer cey ci- cib cic cid cie cii cik cir ckb ckc ckd cki cky crb crc crd cre cri crk crr cry cyb cyc cyd cye cyk cyr dbb dbc dbd dbe dbi dbk dbr dby dcb dcc dcd dce dci dck dcr ddb ddc ddd dde ddi ddk ddr ddy de- deb dec ded dee dei dek der dey di- dib dic did die dii dik dir diy dkb dkc dke dki dkk dkr drb drc drd dre dri drk drr dry dy- dyb dyc dyd dye dyk dyr dyy ebb ebc ebd ebe ebi ebk ebr eby ec- ecb ecc ecd ece eci eck ecr ed- edb edc edd ede edi edk edr edy eeb eec eed eee eek eer eey eib eic eid eie eii eik eir ekb ekc ekd eke eki ekr eky erb erc erd ere eri erk err ery eyc eyd eye eyr i-d ibb ibc ibd ibe ibi ibk ibr iby icb icc icd ice ici ick icr icy idb idc idd ide idi idk idr idy ie- iec ied iee iei iek ier iey iib iic iid iie iii iir ikb ikc ike iki ikk ikr ir- irb irc ird ire iri irk irr iry iyc iye iyr iyy kbb kbc kbd kbe kbi kbk kbr kcb kcc kcd kce kci kck kcr kdb kdc kde kdk kdr kdy ke- keb kec ked kee kei kek ker key kib kic kid kie kii kik kir kkb kkc kke kki kkk kkr kky krc krd kri krk krr kry kyc kyd kye kyr rbb rbc rbd rbe rbi rbk rbr rcb rcc rcd rce rci rcr rdb rdc rdd rde rdi rdr rdy re- reb rec red ree rei rek rer rey rib ric rid rie rii rik rir riy rkb rkc rke rkk rky rrb rrc rrd rri rrk rrr ry- ryc ryd rye ryk ryr ryy ybc ybe ybi ybr yby ycc ycd yce yci ycy yde ydy yeb yec yed yee yei yek yer yey yid yie yii yir yki ykk yrc yre yyb yyc yye yyy