-er -ic b-u bbb bbc bbe bbh bbi bbk bbn bbr bbu bcb bcc bce bch bci bck bcn bcr bcu be- beb bec bee beh bei bek ben ber beu bhb bhc bhe bhh bhi bhk bhr bhu bi- bib bic bie bih bii bik bin bir biu bkb bkc bke bkk bkn bkr bnb bnc bne bni bnk bnn bnr bnu brb bre brh bri brk brn brr bru bub buc bue buh bui buk bun bur buu c-- cbb cbc cbe cbh cbi cbk cbn cbr cbu ccb ccc cce cch cci cck ccn ccr ccu ce- ceb cec cee ceh cei cek cen cer ceu ch- chb chc che chh chi chk chn chr chu ci- cib cic cie cih cii cik cin cir ciu ckb ckc ckh cki cn- cnb cnc cne cnh cni cnn cnr cnu crb crc cre crh cri crk crn crr cru cub cuc cue cuh cui cuk cun cur cuu ebb ebc ebe ebh ebi ebk ebn ebr ebu ec- ecb ecc ece ech eci eck ecn ecr ecu eeb eec eee eek een eer ehb ehc ehe ehh ehi ehn ehr ehu eib eic eie eii eik ein eir eiu ekb ekc eke ekh eki ekr eku en- enb enc ene enh eni enk enn enr enu erb erc ere erh eri erk ern err eru eu- eub euc eue eui eun eur h-i hbb hbc hbe hbh hbi hbk hbn hbr hbu hcb hcc hce hch hci hck hcn hcr he- heb hec hee heh hei hek hen her heu hhb hhc hhe hhh hhi hhk hhn hhr hhu hib hic hie hih hii hik hin hir hiu hkb hkh hki hkk hkn hkr hku hnb hnc hne hnh hnk hnn hnu hr- hrb hrc hre hrh hri hrk hrn hrr hru hub huc hue huh hui huk hun hur huu ibb ibc ibe ibh ibi ibk ibn ibr ibu icb icc ice ich ici ick icn icr icu ie- iec iee iei iek ien ier ihb ihc ihe ihh ihi ihk ihn ihr ihu iib iic iie iih iii iin iir iiu ikb ikc ike iki ikk ikr iku in- inb inc ine inh ini ink inn inr inu ir- irb irc ire iri irk irn irr iru iu- iub iuc iue iui iur kbb kbc kbe kbh kbi kbk kbn kbr kbu kcb kcc kce kch kci kck kcn kcr kcu ke- keb kec kee keh kei kek ken ker khe khh khi khk khn khr khu kib kic kie kih kii kik kin kir kiu kkb kkc kke kkh kki kkk kkn kkr kku kn- knc kne kni knk knn knr knu krc kri krk krn krr kru kub kuc kue kuh kui kuk kun kur kuu n-i nbb nbc nbe nbi nbk nbn nbr nbu ncb ncc nce nch nci nck ncn ncr ncu ne- neb nec nee neh nei nek nen ner neu nhb nhc nhe nhh nhi nhk nhn nhr nhu nib nic nie nih nii nik nin nir niu nkc nke nki nkk nkn nkr nku nnb nnc nne nnh nni nnk nnn nnu nrb nrc nre nri nrk nrn nrr nru nub nuc nue nuh nui nuk nun nur nuu rbb rbc rbe rbh rbi rbk rbn rbr rbu rcb rcc rce rch rci rcn rcr rcu re- reb rec ree reh rei rek ren rer reu rh- rhb rhc rhe rhh rhi rhn rhr rhu rib ric rie rih rii rik rin rir rkb rkc rke rkk rku rnb rnc rnh rni rnn rnr rnu rrb rrc rrh rri rrk rrn rrr rru rub ruc rue ruh rui ruk run rur ruu ubb ubc ube ubh ubi ubk ubn ubr ubu ucb ucc uce uch uci uck ucn ucr ucu ueb uec uee ueh uei uen uer uhb uhc uhe uhh uhi uhr uhu uib uic uie uii uin uir uiu ukb ukc uke uki ukk ukn ukr uku un- unb unc une unh uni unk unn unr unu ur- urb urc ure uri urk urn urr uru uuc uue uun uur uuu