-er -ic bbb bbc bbe bbh bbi bbk bbn bbr bbs bcb bcc bce bch bci bck bcn bcr bcs be- beb bec bee beh bei bek ben ber bes bhb bhc bhe bhh bhi bhk bhr bhs bi- bib bic bie bih bii bik bin bir bis bkb bkc bke bkk bkn bkr bks bnb bnc bne bni bnk bnn bnr bns brb bre brh bri brk brn brr brs bsb bsc bse bsh bsi bsk bsn bsr bss c-- cbb cbc cbe cbh cbi cbk cbn cbr cbs ccb ccc cce cch cci cck ccn ccr ccs ce- ceb cec cee ceh cei cek cen cer ces ch- chb chc che chh chi chk chn chr chs ci- cib cic cie cih cii cik cin cir cis ckb ckc ckh cki cks cn- cnb cnc cne cnh cni cnn cnr cns crb crc cre crh cri crk crn crr crs csb csc cse csh csi csk csn csr css ebb ebc ebe ebh ebi ebk ebn ebr ebs ec- ecb ecc ece ech eci eck ecn ecr ecs eeb eec eee eek een eer ees ehb ehc ehe ehh ehi ehn ehr ehs eib eic eie eii eik ein eir eis ekb ekc eke ekh eki ekr eks en- enb enc ene enh eni enk enn enr ens erb erc ere erh eri erk ern err ers es- esb esc ese esh esi esk esn esr ess h-i hbb hbc hbe hbh hbi hbk hbn hbr hbs hcb hcc hce hch hci hck hcn hcr hcs he- heb hec hee heh hei hek hen her hes hhb hhc hhe hhh hhi hhk hhn hhr hhs hib hic hie hih hii hik hin hir his hkb hkh hki hkk hkn hkr hks hnb hnc hne hnh hnk hnn hns hr- hrb hrc hre hrh hri hrk hrn hrr hrs hsb hsc hse hsh hsi hsk hsn hsr hss ibb ibc ibe ibh ibi ibk ibn ibr ibs icb icc ice ich ici ick icn icr ics ie- iec iee iei iek ien ier ies ihb ihc ihe ihh ihi ihk ihn ihr ihs iib iic iie iih iii iin iir iis ikb ikc ike iki ikk ikr iks in- inb inc ine inh ini ink inn inr ins ir- irb irc ire iri irk irn irr irs is- isb isc ise ish isi isk isn isr iss kbb kbc kbe kbh kbi kbk kbn kbr kbs kcb kcc kce kch kci kck kcn kcr kcs ke- keb kec kee keh kei kek ken ker kes khe khh khi khk khn khr khs kib kic kie kih kii kik kin kir kis kkb kkc kke kkh kki kkk kkn kkr kks kn- knc kne kni knk knn knr krc kri krk krn krr krs ksb ksc kse ksh ksi ksk ksn ksr kss n-i nbb nbc nbe nbi nbk nbn nbr nbs ncb ncc nce nch nci nck ncn ncr ncs ne- neb nec nee neh nei nek nen ner nes nhb nhc nhe nhh nhi nhk nhn nhr nhs nib nic nie nih nii nik nin nir nis nkc nke nki nkk nkn nkr nks nnb nnc nne nnh nni nnk nnn nns nrb nrc nre nri nrk nrn nrr nrs nsb nsc nse nsh nsi nsk nsn nsr nss rbb rbc rbe rbh rbi rbk rbn rbr rbs rcb rcc rce rch rci rcn rcr rcs re- reb rec ree reh rei rek ren rer res rh- rhb rhc rhe rhh rhi rhn rhr rhs rib ric rie rih rii rik rin rir ris rkb rkc rke rkk rks rnb rnc rnh rni rnn rnr rns rrb rrc rrh rri rrk rrn rrr rrs rsb rsc rse rsh rsi rsk rsn rsr rss sbb sbc sbe sbh sbi sbk sbn sbr sbs scb scc sce sch sci sck scn scr scs se- seb sec see seh sei sek sen ser ses sh- shb shc she shh shi shk shn shr shs sib sic sie sih sii sik sin sir sis sk- skb skc ske skh ski skk skr sks snb snc sne sni snk snn snr sns sr- srb src sre srh sri srk srn srr srs ss- ssb ssc sse ssh ssi ssk ssn ssr sss