-er -ic b-u bbb bbc bbd bbe bbi bbr bbu bcb bcc bcd bce bci bcr bcu bcz bdb bdc bdd bde bdi bdr bdu bdz be- beb bec bed bee bei ber beu bez bi- bib bic bid bie bii bir biu biz brb brd bre bri brr bru brz bub buc bud bue bui bur buu buz bzd bze bzr bzu bzz c-- cbb cbc cbd cbe cbi cbr cbu cbz ccb ccc ccd cce cci ccr ccu ccz cdb cdc cdd cde cdi cdr cdu cdz ce- ceb cec ced cee cei cer ceu cez ci- cib cic cid cie cii cir ciu crb crc crd cre cri crr cru crz cub cuc cud cue cui cur cuu cuz cz- czc czd cze dbb dbc dbd dbe dbi dbr dbu dbz dcb dcc dcd dce dci dcr dcu ddb ddc ddd dde ddi ddr ddu ddz de- deb dec ded dee dei der deu dez di- dib dic did die dii dir diu diz drb drc drd dre dri drr dru drz dub duc dud due dui dur duz dzb dzd dze dzi dzr dzu ebb ebc ebd ebe ebi ebr ebu ec- ecb ecc ecd ece eci ecr ecu ed- edb edc edd ede edi edr edu eeb eec eed eee eer eib eic eid eie eii eir eiu erb erc erd ere eri err eru erz eu- eub euc eud eue eui eur eze ezr ezz i-d ibb ibc ibd ibe ibi ibr ibu ibz icb icc icd ice ici icr icu icz idb idc idd ide idi idr idu ie- iec ied iee iei ier iib iic iid iie iii iir iiu ir- irb irc ird ire iri irr iru iu- iub iuc iud iue iui iur iuz ize izi izu izz rbb rbc rbd rbe rbi rbr rbu rcb rcc rcd rce rci rcr rcu rdb rdc rdd rde rdi rdr rdu re- reb rec red ree rei rer reu rez rib ric rid rie rii rir riz rrb rrc rrd rri rrr rru rub ruc rud rue rui rur ruu ruz rzb rze ubb ubc ube ubi ubr ubu ucb ucc ucd uce uci ucr ucu udb udc udd ude udi udr udu ueb uec ued uee uei uer uib uic uid uie uii uir uiu ur- urb urc urd ure uri urr uru urz uuc uue uur uuu uzb uzi uzu zbb zbc zbr zce zeb zec zed zee zer zez zib zid zie zir ziz zub zuc zud zui zur zuz zzr zzz