-er -ic bbb bbc bbe bbi bbn bbr bbs bcb bcc bce bci bcn bcr bcs bcz be- beb bec bee bei ben ber bes bez bi- bib bic bie bii bin bir bis biz bnb bnc bne bni bnn bnr bns bnz brb bre bri brn brr brs brz bsb bsc bse bsi bsn bsr bss bze bzn bzr bzs bzz c-- cbb cbc cbe cbi cbn cbr cbs cbz ccb ccc cce cci ccn ccr ccs ccz ce- ceb cec cee cei cen cer ces cez ci- cib cic cie cii cin cir cis cn- cnb cnc cne cni cnn cnr cns crb crc cre cri crn crr crs crz csb csc cse csi csn csr css csz cz- czc cze ebb ebc ebe ebi ebn ebr ebs ec- ecb ecc ece eci ecn ecr ecs eeb eec eee een eer ees eib eic eie eii ein eir eis en- enb enc ene eni enn enr ens enz erb erc ere eri ern err ers erz es- esb esc ese esi esn esr ess eze ezr ezs ezz ibb ibc ibe ibi ibn ibr ibs ibz icb icc ice ici icn icr ics icz ie- iec iee iei ien ier ies iib iic iie iii iin iir iis in- inb inc ine ini inn inr ins ir- irb irc ire iri irn irr irs is- isb isc ise isi isn isr iss ize izi izz n-i nbb nbc nbe nbi nbn nbr nbs ncb ncc nce nci ncn ncr ncs ne- neb nec nee nei nen ner nes nez nib nic nie nii nin nir nis niz nnb nnc nne nni nnn nns nnz nrb nrc nre nri nrn nrr nrs nrz nsb nsc nse nsi nsn nsr nss nsz nzb nze nzi nzs nzz rbb rbc rbe rbi rbn rbr rbs rcb rcc rce rci rcn rcr rcs re- reb rec ree rei ren rer res rez rib ric rie rii rin rir ris riz rnb rnc rni rnn rnr rns rnz rrb rrc rri rrn rrr rrs rsb rsc rse rsi rsn rsr rss rzb rze sbb sbc sbe sbi sbn sbr sbs scb scc sce sci scn scr scs se- seb sec see sei sen ser ses sez sib sic sie sii sin sir sis snb snc sne sni snn snr sns sr- srb src sre sri srn srr srs ss- ssb ssc sse ssi ssn ssr sss ssz sze szi szr zbb zbc zbr zbs zce zcs zeb zec zee zen zer zes zez zib zie zin zir zis ziz znc zne znn zns zrs zse zsi zsz zzr zzs zzz