-er -ic bbb bbc bbd bbe bbi bbm bbo bbr bcb bcc bcd bce bci bcm bco bcr bdb bdc bdd bde bdi bdm bdo bdr be- beb bec bed bee bei bem beo ber bi- bib bic bid bie bii bim bio bir bmb bmc bmd bme bmi bmm bmo bmr bob boc bod boe boi bom boo bor brb brd bre bri brm bro brr c-- cbb cbc cbd cbe cbi cbm cbo cbr ccb ccc ccd cce cci ccm cco ccr cdb cdc cdd cde cdi cdm cdo cdr ce- ceb cec ced cee cei cem ceo cer ci- cib cic cid cie cii cim cio cir cmb cmc cmd cme cmi cmm cmo cmr co- cob coc cod coe coi com coo cor crb crc crd cre cri crm cro crr dbb dbc dbd dbe dbi dbm dbo dbr dcb dcc dcd dce dci dcm dco dcr ddb ddc ddd dde ddi ddm ddo ddr de- deb dec ded dee dei dem deo der di- dib dic did die dii dim dio dir dmb dmc dmd dme dmi dmm dmo dmr dob doc dod doe doi dom doo dor drb drc drd dre dri drm dro drr ebb ebc ebd ebe ebi ebm ebo ebr ec- ecb ecc ecd ece eci ecm eco ecr ed- edb edc edd ede edi edm edo edr eeb eec eed eee eem eeo eer eib eic eid eie eii eim eio eir em- emb emc emd eme emi emm emo emr eo- eob eoc eod eoe eoi eom eoo eor erb erc erd ere eri erm ero err i-d ibb ibc ibd ibe ibi ibm ibo ibr icb icc icd ice ici icm ico icr idb idc idd ide idi idm ido idr ie- iec ied iee iei iem ier iib iic iid iie iii iim iio iir im- imb imc imd ime imi imm imo io- iob ioc iod ioe ioi iom ioo ior ir- irb irc ird ire iri irm iro irr m-o m-r mbb mbc mbd mbe mbi mbm mbo mbr mc- mcb mcc mcd mce mci mcm mco mcr mdb mdc mdd mde mdi mdm mdo mdr meb mec med mee mei mem meo mer mi- mib mic mid mie mii mim mio mir mmb mmc mmd mme mmi mmm mmo mmr mob moc mod moe moi mom moo mor mrb mrc mrd mre mri mrm mro mrr o-i ob- obb obc obd obe obi obm obo obr oc- ocb occ ocd oci ocm oco ocr odb odc odd ode odi odm odo odr oeb oec oed oee oei oem oeo oer oib oic oid oie oii oim oio oir om- omb omc omd ome omi omm omo omr oo- oob ooc ood ooi oom ooo oor or- orb orc ord ore ori orm oro orr rbb rbc rbd rbe rbi rbm rbo rbr rcb rcc rcd rce rci rcm rco rcr rdb rdc rdd rde rdi rdm rdo rdr re- reb rec red ree rei rem reo rer rib ric rid rie rii rim rio rir rmb rmc rmd rme rmi rmm rmo rmr rob roc rod roe roi rom roo ror rrb rrc rrd rri rrm rrr