-er -ic bbb bbc bbd bbe bbh bbi bbr bcb bcc bcd bce bch bci bcr bdb bdc bdd bde bdh bdi bdr be- beb bec bed bee beh bei ber bhb bhc bhd bhe bhh bhi bhr bi- bib bic bid bie bih bii bir brb brd bre brh bri brr c-- cbb cbc cbd cbe cbh cbi cbr ccb ccc ccd cce cch cci ccr cdb cdc cdd cde cdh cdi cdr ce- ceb cec ced cee ceh cei cer ch- chb chc chd che chh chi chr ci- cib cic cid cie cih cii cir crb crc crd cre crh cri crr dbb dbc dbd dbe dbh dbi dbr dcb dcc dcd dce dci dcr ddb ddc ddd dde ddh ddi ddr de- deb dec ded dee deh dei der dh- dhb dhc dhd dhe dhh dhi dhr di- dib dic did die dih dii dir drb drc drd dre dri drr ebb ebc ebd ebe ebh ebi ebr ec- ecb ecc ecd ece ech eci ecr ed- edb edc edd ede edh edi edr eeb eec eed eee eer ehb ehc ehd ehe ehh ehi ehr eib eic eid eie eii eir erb erc erd ere erh eri err h-i hbb hbc hbd hbe hbh hbi hbr hcb hcc hcd hce hch hci hcr hdb hdc hdd hde hdh hdi hdr he- heb hec hed hee heh hei her hhb hhc hhd hhe hhh hhi hhr hib hic hid hie hih hii hir hr- hrb hrc hrd hre hrh hri hrr i-d ibb ibc ibd ibe ibh ibi ibr icb icc icd ice ich ici icr idb idc idd ide idh idi idr ie- iec ied iee iei ier ihb ihc ihd ihe ihh ihi ihr iib iic iid iie iih iii iir ir- irb irc ird ire iri irr rbb rbc rbd rbe rbh rbi rbr rcb rcc rcd rce rch rci rcr rdb rdc rdd rde rdh rdi rdr re- reb rec red ree reh rei rer rh- rhb rhc rhd rhe rhh rhi rhr rib ric rid rie rih rii rir rrb rrc rrd rrh rri rrr