-er -ic bbb bbc bbd bbe bbg bbi bbo bbr bbs bcb bcc bcd bce bcg bci bco bcr bcs bdb bdc bdd bde bdg bdi bdo bdr bds be- beb bec bed bee beg bei beo ber bes bgb bgc bgd bge bgg bgi bgo bgr bgs bi- bib bic bid bie big bii bio bir bis bob boc bod boe bog boi boo bor bos brb brd bre brg bri bro brr brs bsb bsc bsd bse bsg bsi bso bsr bss c-- cbb cbc cbd cbe cbg cbi cbo cbr cbs ccb ccc ccd cce ccg cci cco ccr ccs cdb cdc cdd cde cdg cdi cdo cdr cds ce- ceb cec ced cee ceg cei ceo cer ces cgb cgc cgd cge cgg cgi cgo cgr cgs ci- cib cic cid cie cig cii cio cir cis co- cob coc cod coe cog coi coo cor cos crb crc crd cre crg cri cro crr crs csb csc csd cse csg csi cso csr css dbb dbc dbd dbe dbg dbi dbo dbr dbs dcb dcc dcd dce dcg dci dco dcr dcs ddb ddc ddd dde ddg ddi ddo ddr dds de- deb dec ded dee deg dei deo der des dgc dgd dge dgg dgi dgr dgs di- dib dic did die dig dii dio dir dis dob doc dod doe dog doi doo dor dos drb drc drd dre drg dri dro drr drs dsb dsc dsd dse dsg dsi dso dsr dss ebb ebc ebd ebe ebg ebi ebo ebr ebs ec- ecb ecc ecd ece ecg eci eco ecr ecs ed- edb edc edd ede edg edi edo edr eds eeb eec eed eee eeg eeo eer ees egb egc egd ege egg egi ego egr egs eib eic eid eie eig eii eio eir eis eo- eob eoc eod eoe eog eoi eoo eor eos erb erc erd ere erg eri ero err ers es- esb esc esd ese esg esi eso esr ess g-d gbc gbd gbe gbg gbi gbo gbr gbs gcb gcc gcd gce gcg gci gco gcr gcs gdb gdc gdd gde gdi gdo gdr gds ge- geb gec ged gee geg gei geo ger ges ggb ggc ggd ggg ggi ggo ggr ggs gib gic gid gie gig gii gio gir gis gob goc god goe gog goi goo gor gos grb grc grd gre grg gri gro grr grs gsb gsc gsd gse gsg gsi gso gsr gss i-d ibb ibc ibd ibe ibg ibi ibo ibr ibs icb icc icd ice icg ici ico icr ics idb idc idd ide idg idi ido idr ids ie- iec ied iee ieg iei ier ies igb igc igd ige igg igi igo igr igs iib iic iid iie iii iio iir iis io- iob ioc iod ioe iog ioi ioo ior ios ir- irb irc ird ire irg iri iro irr irs is- isb isc isd ise isg isi iso isr iss o-i ob- obb obc obd obe obg obi obo obr obs oc- ocb occ ocd ocg oci oco ocr ocs odb odc odd ode odg odi odo odr ods oeb oec oed oee oeg oei oeo oer oes ogc ogd oge ogg ogi ogo ogs oib oic oid oie oii oio oir ois oo- oob ooc ood oog ooi ooo oor oos or- orb orc ord ore org ori oro orr ors os- osb osc osd ose osg osi oso osr oss rbb rbc rbd rbe rbg rbi rbo rbr rbs rcb rcc rcd rce rcg rci rco rcr rcs rdb rdc rdd rde rdg rdi rdo rdr rds re- reb rec red ree reg rei reo rer res rgb rgc rgd rge rgg rgi rgo rgr rgs rib ric rid rie rig rii rio rir ris rob roc rod roe rog roi roo ror ros rrb rrc rrd rrg rri rrr rrs rsb rsc rsd rse rsg rsi rso rsr rss sbb sbc sbd sbe sbg sbi sbo sbr sbs scb scc scd sce scg sci sco scr scs sdb sdc sdd sde sdg sdi sdo sdr sds se- seb sec sed see seg sei seo ser ses sgb sgc sgd sge sgg sgi sgo sgr sgs sib sic sid sie sig sii sio sir sis sob soc sod soe sog soi soo sor sos sr- srb src srd sre srg sri sro srr srs ss- ssb ssc ssd sse ssg ssi sso ssr sss