-er -ic bbb bbc bbd bbe bbg bbi bbm bbo bbr bbs bcb bcc bcd bce bcg bci bcm bco bcr bcs bdb bdc bdd bde bdg bdi bdm bdo bdr bds be- beb bec bed bee beg bei bem beo ber bes bgb bgc bgd bge bgg bgi bgm bgo bgr bgs bi- bib bic bid bie big bii bim bio bir bis bmb bmc bmd bme bmg bmi bmm bmo bmr bms bob boc bod boe bog boi bom boo bor bos brb brd bre brg bri brm bro brr brs bsb bsc bsd bse bsg bsi bsm bso bsr bss c-- cbb cbc cbd cbe cbg cbi cbm cbo cbr cbs ccb ccc ccd cce ccg cci ccm cco ccr ccs cdb cdc cdd cde cdg cdi cdm cdo cdr cds ce- ceb cec ced cee ceg cei cem ceo cer ces cgb cgc cgd cge cgg cgi cgm cgo cgr cgs ci- cib cic cid cie cig cii cim cio cir cis cmb cmc cmd cme cmg cmi cmm cmo cmr cms co- cob coc cod coe cog coi com coo cor cos crb crc crd cre crg cri crm cro crr crs csb csc csd cse csg csi csm cso csr css dbb dbc dbd dbe dbg dbi dbm dbo dbr dbs dcb dcc dcd dce dcg dci dcm dco dcr dcs ddb ddc ddd dde ddg ddi ddm ddo ddr dds de- deb dec ded dee deg dei dem deo der des dgc dgd dge dgg dgi dgm dgr dgs di- dib dic did die dig dii dim dio dir dis dmb dmc dmd dme dmg dmi dmm dmo dmr dms dob doc dod doe dog doi dom doo dor dos drb drc drd dre drg dri drm dro drr drs dsb dsc dsd dse dsg dsi dsm dso dsr dss ebb ebc ebd ebe ebg ebi ebm ebo ebr ebs ec- ecb ecc ecd ece ecg eci ecm eco ecr ecs ed- edb edc edd ede edg edi edm edo edr eds eeb eec eed eee eeg eem eeo eer ees egb egc egd ege egg egi egm ego egr egs eib eic eid eie eig eii eim eio eir eis em- emb emc emd eme emg emi emm emo emr ems eo- eob eoc eod eoe eog eoi eom eoo eor eos erb erc erd ere erg eri erm ero err ers es- esb esc esd ese esg esi esm eso esr ess g-d gbc gbd gbe gbg gbi gbm gbo gbr gbs gcb gcc gcd gce gcg gci gcm gco gcr gcs gdb gdc gdd gde gdi gdm gdo gdr gds ge- geb gec ged gee geg gei gem geo ger ges ggb ggc ggd ggg ggi ggm ggo ggr ggs gib gic gid gie gig gii gim gio gir gis gmb gmc gmd gme gmg gmi gmm gmo gmr gms gob goc god goe gog goi gom goo gor gos grb grc grd gre grg gri grm gro grr grs gsb gsc gsd gse gsg gsi gsm gso gsr gss i-d ibb ibc ibd ibe ibg ibi ibm ibo ibr ibs icb icc icd ice icg ici icm ico icr ics idb idc idd ide idg idi idm ido idr ids ie- iec ied iee ieg iei iem ier ies igb igc igd ige igg igi igm igo igr igs iib iic iid iie iii iim iio iir iis im- imb imc imd ime img imi imm imo ims io- iob ioc iod ioe iog ioi iom ioo ior ios ir- irb irc ird ire irg iri irm iro irr irs is- isb isc isd ise isg isi ism iso isr iss m-o m-r mbb mbc mbd mbe mbg mbi mbm mbo mbr mbs mc- mcb mcc mcd mce mcg mci mcm mco mcr mcs mdb mdc mdd mde mdg mdi mdm mdo mdr mds meb mec med mee meg mei mem meo mer mes mgb mgc mgd mge mgi mgm mgo mgr mgs mi- mib mic mid mie mig mii mim mio mir mis mmb mmc mmd mme mmg mmi mmm mmo mmr mms mob moc mod moe mog moi mom moo mor mos mrb mrc mrd mre mrg mri mrm mro mrr mrs msb msc msd mse msg msi msm mso msr mss o-i ob- obb obc obd obe obg obi obm obo obr obs oc- ocb occ ocd ocg oci ocm oco ocr ocs odb odc odd ode odg odi odm odo odr ods oeb oec oed oee oeg oei oem oeo oer oes ogc ogd oge ogg ogi ogo ogs oib oic oid oie oii oim oio oir ois om- omb omc omd ome omg omi omm omo omr oms oo- oob ooc ood oog ooi oom ooo oor oos or- orb orc ord ore org ori orm oro orr ors os- osb osc osd ose osg osi osm oso osr oss rbb rbc rbd rbe rbg rbi rbm rbo rbr rbs rcb rcc rcd rce rcg rci rcm rco rcr rcs rdb rdc rdd rde rdg rdi rdm rdo rdr rds re- reb rec red ree reg rei rem reo rer res rgb rgc rgd rge rgg rgi rgo rgr rgs rib ric rid rie rig rii rim rio rir ris rmb rmc rmd rme rmg rmi rmm rmo rmr rms rob roc rod roe rog roi rom roo ror ros rrb rrc rrd rrg rri rrm rrr rrs rsb rsc rsd rse rsg rsi rsm rso rsr rss sbb sbc sbd sbe sbg sbi sbm sbo sbr sbs scb scc scd sce scg sci scm sco scr scs sdb sdc sdd sde sdg sdi sdm sdo sdr sds se- seb sec sed see seg sei sem seo ser ses sgb sgc sgd sge sgg sgi sgm sgo sgr sgs sib sic sid sie sig sii sim sio sir sis smb smc smd sme smg smi smm smo smr sms sob soc sod soe sog soi som soo sor sos sr- srb src srd sre