-er -ic b-u bbb bbc bbd bbe bbi bbk bbn bbr bbu bcb bcc bcd bce bci bck bcn bcr bcu bdb bdc bdd bde bdi bdk bdr bdu be- beb bec bed bee bei bek ben ber beu bi- bib bic bid bie bii bik bin bir biu bkb bkc bke bkk bkn bkr bnb bnc bnd bne bni bnk bnn bnr bnu brb brd bre bri brk brn brr bru bub buc bud bue bui buk bun bur buu c-- cbb cbc cbd cbe cbi cbk cbn cbr cbu ccb ccc ccd cce cci cck ccn ccr ccu cdb cdc cdd cde cdi cdk cdn cdr cdu ce- ceb cec ced cee cei cek cen cer ceu ci- cib cic cid cie cii cik cin cir ciu ckb ckc ckd cki cn- cnb cnc cnd cne cni cnn cnr cnu crb crc crd cre cri crk crn crr cru cub cuc cud cue cui cuk cun cur cuu dbb dbc dbd dbe dbi dbk dbn dbr dbu dcb dcc dcd dce dci dck dcn dcr dcu ddb ddc ddd dde ddi ddk ddn ddr ddu de- deb dec ded dee dei dek den der deu di- dib dic did die dii dik din dir diu dkb dkc dke dki dkk dkr dku dnb dnc dnd dne dni dnk dnn dnr drb drc drd dre dri drk drn drr dru dub duc dud due dui duk dun dur ebb ebc ebd ebe ebi ebk ebn ebr ebu ec- ecb ecc ecd ece eci eck ecn ecr ecu ed- edb edc edd ede edi edk edn edr edu eeb eec eed eee eek een eer eib eic eid eie eii eik ein eir eiu ekb ekc ekd eke eki ekr eku en- enb enc end ene eni enk enn enr enu erb erc erd ere eri erk ern err eru eu- eub euc eud eue eui eun eur i-d ibb ibc ibd ibe ibi ibk ibn ibr ibu icb icc icd ice ici ick icn icr icu idb idc idd ide idi idk idn idr idu ie- iec ied iee iei iek ien ier iib iic iid iie iii iin iir iiu ikb ikc ike iki ikk ikr iku in- inb inc ind ine ini ink inn inr inu ir- irb irc ird ire iri irk irn irr iru iu- iub iuc iud iue iui iur kbb kbc kbd kbe kbi kbk kbn kbr kbu kcb kcc kcd kce kci kck kcn kcr kcu kdb kdc kde kdk kdr kdu ke- keb kec ked kee kei kek ken ker kib kic kid kie kii kik kin kir kiu kkb kkc kke kki kkk kkn kkr kku kn- knc knd kne kni knk knn knr knu krc krd kri krk krn krr kru kub kuc kud kue kui kuk kun kur kuu n-i nbb nbc nbd nbe nbi nbk nbn nbr nbu ncb ncc ncd nce nci nck ncn ncr ncu ndb ndc ndd nde ndi ndk ndn ndr ndu ne- neb nec ned nee nei nek nen ner neu nib nic nid nie nii nik nin nir niu nkc nke nki nkk nkn nkr nku nnb nnc nne nni nnk nnn nnu nrb nrc nrd nre nri nrk nrn nrr nru nub nuc nud nue nui nuk nun nur nuu rbb rbc rbd rbe rbi rbk rbn rbr rbu rcb rcc rcd rce rci rcn rcr rcu rdb rdc rdd rde rdi rdn rdr rdu re- reb rec red ree rei rek ren rer reu rib ric rid rie rii rik rin rir rkb rkc rke rkk rku rnb rnc rnd rni rnn rnr rnu rrb rrc rrd rri rrk rrn rrr rru rub ruc rud rue rui ruk run rur ruu ubb ubc ube ubi ubk ubn ubr ubu ucb ucc ucd uce uci uck ucn ucr ucu udb udc udd ude udi udk udn udr udu ueb uec ued uee uei uen uer uib uic uid uie uii uin uir uiu ukb ukc uke uki ukk ukn ukr uku un- unb unc und une uni unk unn unr unu ur- urb urc urd ure uri urk urn urr uru uuc uue uun uur uuu