-er -ic bbb bbc bbd bbe bbh bbi bbr bbs bcb bcc bcd bce bch bci bcr bcs bdb bdc bdd bde bdh bdi bdr bds be- beb bec bed bee beh bei ber bes bhb bhc bhd bhe bhh bhi bhr bhs bi- bib bic bid bie bih bii bir bis brb brd bre brh bri brr brs bsb bsc bsd bse bsh bsi bsr bss c-- cbb cbc cbd cbe cbh cbi cbr cbs ccb ccc ccd cce cch cci ccr ccs cdb cdc cdd cde cdh cdi cdr cds ce- ceb cec ced cee ceh cei cer ces ch- chb chc chd che chh chi chr chs ci- cib cic cid cie cih cii cir cis crb crc crd cre crh cri crr crs csb csc csd cse csh csi csr css dbb dbc dbd dbe dbh dbi dbr dbs dcb dcc dcd dce dci dcr dcs ddb ddc ddd dde ddh ddi ddr dds de- deb dec ded dee deh dei der des dh- dhb dhc dhd dhe dhh dhi dhr dhs di- dib dic did die dih dii dir dis drb drc drd dre dri drr drs dsb dsc dsd dse dsh dsi dsr dss ebb ebc ebd ebe ebh ebi ebr ebs ec- ecb ecc ecd ece ech eci ecr ecs ed- edb edc edd ede edh edi edr eds eeb eec eed eee eer ees ehb ehc ehd ehe ehh ehi ehr ehs eib eic eid eie eii eir eis erb erc erd ere erh eri err ers es- esb esc esd ese esh esi esr ess h-i hbb hbc hbd hbe hbh hbi hbr hbs hcb hcc hcd hce hch hci hcr hcs hdb hdc hdd hde hdh hdi hdr hds he- heb hec hed hee heh hei her hes hhb hhc hhd hhe hhh hhi hhr hhs hib hic hid hie hih hii hir his hr- hrb hrc hrd hre hrh hri hrr hrs hsb hsc hsd hse hsh hsi hsr hss i-d ibb ibc ibd ibe ibh ibi ibr ibs icb icc icd ice ich ici icr ics idb idc idd ide idh idi idr ids ie- iec ied iee iei ier ies ihb ihc ihd ihe ihh ihi ihr ihs iib iic iid iie iih iii iir iis ir- irb irc ird ire iri irr irs is- isb isc isd ise ish isi isr iss rbb rbc rbd rbe rbh rbi rbr rbs rcb rcc rcd rce rch rci rcr rcs rdb rdc rdd rde rdh rdi rdr rds re- reb rec red ree reh rei rer res rh- rhb rhc rhd rhe rhh rhi rhr rhs rib ric rid rie rih rii rir ris rrb rrc rrd rrh rri rrr rrs rsb rsc rsd rse rsh rsi rsr rss sbb sbc sbd sbe sbh sbi sbr sbs scb scc scd sce sch sci scr scs sdb sdc sdd sde sdh sdi sdr sds se- seb sec sed see seh sei ser ses sh- shb shc shd she shh shi shr shs sib sic sid sie sih sii sir sis sr- srb src srd sre srh sri srr srs ss- ssb ssc ssd sse ssh ssi ssr sss