-er -ic b-u bbb bbc bbe bbi bbn bbr bbu bcb bcc bce bci bcn bcr bcu bcz be- beb bec bee bei ben ber beu bez bi- bib bic bie bii bin bir biu biz bnb bnc bne bni bnn bnr bnu bnz brb bre bri brn brr bru brz bub buc bue bui bun bur buu buz bze bzn bzr bzu bzz c-- cbb cbc cbe cbi cbn cbr cbu cbz ccb ccc cce cci ccn ccr ccu ccz ce- ceb cec cee cei cen cer ceu cez ci- cib cic cie cii cin cir ciu cn- cnb cnc cne cni cnn cnr cnu crb crc cre cri crn crr cru crz cub cuc cue cui cun cur cuu cuz cz- czc cze ebb ebc ebe ebi ebn ebr ebu ec- ecb ecc ece eci ecn ecr ecu eeb eec eee een eer eib eic eie eii ein eir eiu en- enb enc ene eni enn enr enu enz erb erc ere eri ern err eru erz eu- eub euc eue eui eun eur eze ezr ezz ibb ibc ibe ibi ibn ibr ibu ibz icb icc ice ici icn icr icu icz ie- iec iee iei ien ier iib iic iie iii iin iir iiu in- inb inc ine ini inn inr inu ir- irb irc ire iri irn irr iru iu- iub iuc iue iui iur iuz ize izi izu izz n-i nbb nbc nbe nbi nbn nbr nbu ncb ncc nce nci ncn ncr ncu ne- neb nec nee nei nen ner neu nez nib nic nie nii nin nir niu niz nnb nnc nne nni nnn nnu nnz nrb nrc nre nri nrn nrr nru nrz nub nuc nue nui nun nur nuu nzb nze nzi nzz rbb rbc rbe rbi rbn rbr rbu rcb rcc rce rci rcn rcr rcu re- reb rec ree rei ren rer reu rez rib ric rie rii rin rir riz rnb rnc rni rnn rnr rnu rnz rrb rrc rri rrn rrr rru rub ruc rue rui run rur ruu ruz rzb rze ubb ubc ube ubi ubn ubr ubu ucb ucc uce uci ucn ucr ucu ueb uec uee uei uen uer uib uic uie uii uin uir uiu un- unb unc une uni unn unr unu ur- urb urc ure uri urn urr uru urz uuc uue uun uur uuu uzb uzi uzu zbb zbc zbr zce zeb zec zee zen zer zez zib zie zin zir ziz znc zne znn zub zuc zui zun zur zuz zzr zzz