-er -ic bbb bbc bbe bbh bbi bbn bbr bbs bcb bcc bce bch bci bcn bcr bcs be- beb bec bee beh bei ben ber bes bhb bhc bhe bhh bhi bhr bhs bi- bib bic bie bih bii bin bir bis bnb bnc bne bni bnn bnr bns brb bre brh bri brn brr brs bsb bsc bse bsh bsi bsn bsr bss c-- cbb cbc cbe cbh cbi cbn cbr cbs ccb ccc cce cch cci ccn ccr ccs ce- ceb cec cee ceh cei cen cer ces ch- chb chc che chh chi chn chr chs ci- cib cic cie cih cii cin cir cis cn- cnb cnc cne cnh cni cnn cnr cns crb crc cre crh cri crn crr crs csb csc cse csh csi csn csr css ebb ebc ebe ebh ebi ebn ebr ebs ec- ecb ecc ece ech eci ecn ecr ecs eeb eec eee een eer ees ehb ehc ehe ehh ehi ehn ehr ehs eib eic eie eii ein eir eis en- enb enc ene enh eni enn enr ens erb erc ere erh eri ern err ers es- esb esc ese esh esi esn esr ess h-i hbb hbc hbe hbh hbi hbn hbr hbs hcb hcc hce hch hci hcn hcr hcs he- heb hec hee heh hei hen her hes hhb hhc hhe hhh hhi hhn hhr hhs hib hic hie hih hii hin hir his hnb hnc hne hnh hnn hns hr- hrb hrc hre hrh hri hrn hrr hrs hsb hsc hse hsh hsi hsn hsr hss ibb ibc ibe ibh ibi ibn ibr ibs icb icc ice ich ici icn icr ics ie- iec iee iei ien ier ies ihb ihc ihe ihh ihi ihn ihr ihs iib iic iie iih iii iin iir iis in- inb inc ine inh ini inn inr ins ir- irb irc ire iri irn irr irs is- isb isc ise ish isi isn isr iss n-i nbb nbc nbe nbi nbn nbr nbs ncb ncc nce nch nci ncn ncr ncs ne- neb nec nee neh nei nen ner nes nhb nhc nhe nhh nhi nhn nhr nhs nib nic nie nih nii nin nir nis nnb nnc nne nnh nni nnn nns nrb nrc nre nri nrn nrr nrs nsb nsc nse nsh nsi nsn nsr nss rbb rbc rbe rbh rbi rbn rbr rbs rcb rcc rce rch rci rcn rcr rcs re- reb rec ree reh rei ren rer res rh- rhb rhc rhe rhh rhi rhn rhr rhs rib ric rie rih rii rin rir ris rnb rnc rnh rni rnn rnr rns rrb rrc rrh rri rrn rrr rrs rsb rsc rse rsh rsi rsn rsr rss sbb sbc sbe sbh sbi sbn sbr sbs scb scc sce sch sci scn scr scs se- seb sec see seh sei sen ser ses sh- shb shc she shh shi shn shr shs sib sic sie sih sii sin sir sis snb snc sne sni snn snr sns sr- srb src sre srh sri srn srr srs ss- ssb ssc sse ssh ssi ssn ssr sss