-er -ic bbb bbc bbe bbh bbi bbm bbo bbr bcb bcc bce bch bci bcm bco bcr be- beb bec bee beh bei bem beo ber bhb bhc bhe bhh bhi bhm bho bhr bi- bib bic bie bih bii bim bio bir bmb bmc bme bmh bmi bmm bmo bmr bob boc boe boh boi bom boo bor brb bre brh bri brm bro brr c-- cbb cbc cbe cbh cbi cbm cbo cbr ccb ccc cce cch cci ccm cco ccr ce- ceb cec cee ceh cei cem ceo cer ch- chb chc che chh chi chm cho chr ci- cib cic cie cih cii cim cio cir cmb cmc cme cmh cmi cmm cmo cmr co- cob coc coe coh coi com coo cor crb crc cre crh cri crm cro crr ebb ebc ebe ebh ebi ebm ebo ebr ec- ecb ecc ece ech eci ecm eco ecr eeb eec eee eem eeo eer ehb ehc ehe ehh ehi ehm eho ehr eib eic eie eii eim eio eir em- emb emc eme emh emi emm emo emr eo- eob eoc eoe eoh eoi eom eoo eor erb erc ere erh eri erm ero err h-i hbb hbc hbe hbh hbi hbm hbo hbr hcb hcc hce hch hci hcm hco hcr he- heb hec hee heh hei hem heo her hhb hhc hhe hhh hhi hhm hho hhr hib hic hie hih hii him hio hir hmb hmc hme hmh hmi hmm hmo hmr hob hoc hoe hoh hoi hom hoo hor hr- hrb hrc hre hrh hri hrm hro hrr ibb ibc ibe ibh ibi ibm ibo ibr icb icc ice ich ici icm ico icr ie- iec iee iei iem ier ihb ihc ihe ihh ihi ihm iho ihr iib iic iie iih iii iim iio iir im- imb imc ime imh imi imm imo io- iob ioc ioe ioh ioi iom ioo ior ir- irb irc ire iri irm iro irr m-o m-r mbb mbc mbe mbh mbi mbm mbo mbr mc- mcb mcc mce mch mci mcm mco mcr meb mec mee meh mei mem meo mer mhc mhh mhi mhm mho mhr mi- mib mic mie mih mii mim mio mir mmb mmc mme mmh mmi mmm mmo mmr mob moc moe moh moi mom moo mor mrb mrc mre mrh mri mrm mro mrr o-i ob- obb obc obe obh obi obm obo obr oc- ocb occ och oci ocm oco ocr oeb oec oee oeh oei oem oeo oer ohc ohe ohh ohi ohm oho ohr oib oic oie oii oim oio oir om- omb omc ome omh omi omm omo omr oo- oob ooc ooh ooi oom ooo oor or- orb orc ore orh ori orm oro orr rbb rbc rbe rbh rbi rbm rbo rbr rcb rcc rce rch rci rcm rco rcr re- reb rec ree reh rei rem reo rer rh- rhb rhc rhe rhh rhi rhm rho rhr rib ric rie rih rii rim rio rir rmb rmc rme rmh rmi rmm rmo rmr rob roc roe roh roi rom roo ror rrb rrc rrh rri rrm rrr