-er -ic bbb bbc bbd bbe bbh bbi bbk bbr bcb bcc bcd bce bch bci bck bcr bdb bdc bdd bde bdh bdi bdk bdr be- beb bec bed bee beh bei bek ber bhb bhc bhd bhe bhh bhi bhk bhr bi- bib bic bid bie bih bii bik bir bkb bkc bke bkk bkr brb brd bre brh bri brk brr c-- cbb cbc cbd cbe cbh cbi cbk cbr ccb ccc ccd cce cch cci cck ccr cdb cdc cdd cde cdh cdi cdk cdr ce- ceb cec ced cee ceh cei cek cer ch- chb chc chd che chh chi chk chr ci- cib cic cid cie cih cii cik cir ckb ckc ckd ckh cki crb crc crd cre crh cri crk crr dbb dbc dbd dbe dbh dbi dbk dbr dcb dcc dcd dce dci dck dcr ddb ddc ddd dde ddh ddi ddk ddr de- deb dec ded dee deh dei dek der dh- dhb dhc dhd dhe dhh dhi dhk dhr di- dib dic did die dih dii dik dir dkb dkc dke dki dkk dkr drb drc drd dre dri drk drr ebb ebc ebd ebe ebh ebi ebk ebr ec- ecb ecc ecd ece ech eci eck ecr ed- edb edc edd ede edh edi edk edr eeb eec eed eee eek eer ehb ehc ehd ehe ehh ehi ehr eib eic eid eie eii eik eir ekb ekc ekd eke ekh eki ekr erb erc erd ere erh eri erk err h-i hbb hbc hbd hbe hbh hbi hbk hbr hcb hcc hcd hce hch hci hck hcr hdb hdc hdd hde hdh hdi hdk hdr he- heb hec hed hee heh hei hek her hhb hhc hhd hhe hhh hhi hhk hhr hib hic hid hie hih hii hik hir hkb hkd hkh hki hkk hkr hr- hrb hrc hrd hre hrh hri hrk hrr i-d ibb ibc ibd ibe ibh ibi ibk ibr icb icc icd ice ich ici ick icr idb idc idd ide idh idi idk idr ie- iec ied iee iei iek ier ihb ihc ihd ihe ihh ihi ihk ihr iib iic iid iie iih iii iir ikb ikc ike iki ikk ikr ir- irb irc ird ire iri irk irr kbb kbc kbd kbe kbh kbi kbk kbr kcb kcc kcd kce kch kci kck kcr kdb kdc kde kdh kdk kdr ke- keb kec ked kee keh kei kek ker khe khh khi khk khr kib kic kid kie kih kii kik kir kkb kkc kke kkh kki kkk kkr krc krd kri krk krr rbb rbc rbd rbe rbh rbi rbk rbr rcb rcc rcd rce rch rci rcr rdb rdc rdd rde rdh rdi rdr re- reb rec red ree reh rei rek rer rh- rhb rhc rhd rhe rhh rhi rhr rib ric rid rie rih rii rik rir rkb rkc rke rkk rrb rrc rrd rrh rri rrk rrr