-er -ic bbb bbc bbe bbh bbi bbk bbn bbr bcb bcc bce bch bci bck bcn bcr be- beb bec bee beh bei bek ben ber bhb bhc bhe bhh bhi bhk bhr bi- bib bic bie bih bii bik bin bir bkb bkc bke bkk bkn bkr bnb bnc bne bni bnk bnn bnr brb bre brh bri brk brn brr c-- cbb cbc cbe cbh cbi cbk cbn cbr ccb ccc cce cch cci cck ccn ccr ce- ceb cec cee ceh cei cek cen cer ch- chb chc che chh chi chk chn chr ci- cib cic cie cih cii cik cin cir ckb ckc ckh cki cn- cnb cnc cne cnh cni cnn cnr crb crc cre crh cri crk crn crr ebb ebc ebe ebh ebi ebk ebn ebr ec- ecb ecc ece ech eci eck ecn ecr eeb eec eee eek een eer ehb ehc ehe ehh ehi ehn ehr eib eic eie eii eik ein eir ekb ekc eke ekh eki ekr en- enb enc ene enh eni enk enn enr erb erc ere erh eri erk ern err h-i hbb hbc hbe hbh hbi hbk hbn hbr hcb hcc hce hch hci hck hcn hcr he- heb hec hee heh hei hek hen her hhb hhc hhe hhh hhi hhk hhn hhr hib hic hie hih hii hik hin hir hkb hkh hki hkk hkn hkr hnb hnc hne hnh hnk hnn hr- hrb hrc hre hrh hri hrk hrn hrr ibb ibc ibe ibh ibi ibk ibn ibr icb icc ice ich ici ick icn icr ie- iec iee iei iek ien ier ihb ihc ihe ihh ihi ihk ihn ihr iib iic iie iih iii iin iir ikb ikc ike iki ikk ikr in- inb inc ine inh ini ink inn inr ir- irb irc ire iri irk irn irr kbb kbc kbe kbh kbi kbk kbn kbr kcb kcc kce kch kci kck kcn kcr ke- keb kec kee keh kei kek ken ker khe khh khi khk khn khr kib kic kie kih kii kik kin kir kkb kkc kke kkh kki kkk kkn kkr kn- knc kne kni knk knn knr krc kri krk krn krr n-i nbb nbc nbe nbi nbk nbn nbr ncb ncc nce nch nci nck ncn ncr ne- neb nec nee neh nei nek nen ner nhb nhc nhe nhh nhi nhk nhn nhr nib nic nie nih nii nik nin nir nkc nke nki nkk nkn nkr nnb nnc nne nnh nni nnk nnn nrb nrc nre nri nrk nrn nrr rbb rbc rbe rbh rbi rbk rbn rbr rcb rcc rce rch rci rcn rcr re- reb rec ree reh rei rek ren rer rh- rhb rhc rhe rhh rhi rhn rhr rib ric rie rih rii rik rin rir rkb rkc rke rkk rnb rnc rnh rni rnn rnr rrb rrc rrh rri rrk rrn rrr