-er -ic bbb bbc bbd bbe bbg bbi bbn bbo bbr bbs bcb bcc bcd bce bcg bci bcn bco bcr bcs bdb bdc bdd bde bdg bdi bdo bdr bds be- beb bec bed bee beg bei ben beo ber bes bgb bgc bgd bge bgg bgi bgn bgo bgr bgs bi- bib bic bid bie big bii bin bio bir bis bnb bnc bnd bne bng bni bnn bno bnr bns bob boc bod boe bog boi bon boo bor bos brb brd bre brg bri brn bro brr brs bsb bsc bsd bse bsg bsi bsn bso bsr bss c-- cbb cbc cbd cbe cbg cbi cbn cbo cbr cbs ccb ccc ccd cce ccg cci ccn cco ccr ccs cdb cdc cdd cde cdg cdi cdn cdo cdr cds ce- ceb cec ced cee ceg cei cen ceo cer ces cgb cgc cgd cge cgg cgi cgn cgo cgr cgs ci- cib cic cid cie cig cii cin cio cir cis cn- cnb cnc cnd cne cng cni cnn cno cnr cns co- cob coc cod coe cog coi con coo cor cos crb crc crd cre crg cri crn cro crr crs csb csc csd cse csg csi csn cso csr css dbb dbc dbd dbe dbg dbi dbn dbo dbr dbs dcb dcc dcd dce dcg dci dcn dco dcr dcs ddb ddc ddd dde ddg ddi ddn ddo ddr dds de- deb dec ded dee deg dei den deo der des dgc dgd dge dgg dgi dgn dgr dgs di- dib dic did die dig dii din dio dir dis dnb dnc dnd dne dng dni dnn dno dnr dns dob doc dod doe dog doi don doo dor dos drb drc drd dre drg dri drn dro drr drs dsb dsc dsd dse dsg dsi dsn dso dsr dss ebb ebc ebd ebe ebg ebi ebn ebo ebr ebs ec- ecb ecc ecd ece ecg eci ecn eco ecr ecs ed- edb edc edd ede edg edi edn edo edr eds eeb eec eed eee eeg een eeo eer ees egb egc egd ege egg egi egn ego egr egs eib eic eid eie eig eii ein eio eir eis en- enb enc end ene eng eni enn eno enr ens eo- eob eoc eod eoe eog eoi eon eoo eor eos erb erc erd ere erg eri ern ero err ers es- esb esc esd ese esg esi esn eso esr ess g-d gbc gbd gbe gbg gbi gbn gbo gbr gbs gcb gcc gcd gce gcg gci gcn gco gcr gcs gdb gdc gdd gde gdi gdn gdo gdr gds ge- geb gec ged gee geg gei gen geo ger ges ggb ggc ggd ggg ggi ggn ggo ggr ggs gib gic gid gie gig gii gin gio gir gis gnb gnc gnd gne gni gnn gno gnr gns gob goc god goe gog goi gon goo gor gos grb grc grd gre grg gri grn gro grr grs gsb gsc gsd gse gsg gsi gsn gso gsr gss i-d ibb ibc ibd ibe ibg ibi ibn ibo ibr ibs icb icc icd ice icg ici icn ico icr ics idb idc idd ide idg idi idn ido idr ids ie- iec ied iee ieg iei ien ier ies igb igc igd ige igg igi ign igo igr igs iib iic iid iie iii iin iio iir iis in- inb inc ind ine ing ini inn ino inr ins io- iob ioc iod ioe iog ioi ion ioo ior ios ir- irb irc ird ire irg iri irn iro irr irs is- isb isc isd ise isg isi isn iso isr iss n-i nbb nbc nbd nbe nbg nbi nbn nbo nbr nbs ncb ncc ncd nce ncg nci ncn nco ncr ncs ndb ndc ndd nde ndg ndi ndn ndo ndr nds ne- neb nec ned nee neg nei nen neo ner nes ngb ngc ngd nge ngg ngi ngn ngo ngs nib nic nid nie nig nii nin nio nir nis nnb nnc nne nng nni nnn nno nns no- nob noc nod noe nog noi non noo nor nos nrb nrc nrd nre nrg nri nrn nro nrr nrs nsb nsc nsd nse nsg nsi nsn nso nsr nss o-i ob- obb obc obd obe obg obi obn obo obr obs oc- ocb occ ocd ocg oci ocn oco ocr ocs odb odc odd ode odg odi odn odo odr ods oeb oec oed oee oeg oei oen oeo oer oes ogc ogd oge ogg ogi ogn ogo ogs oib oic oid oie oii oin oio oir ois on- onb onc ond one ong oni onn ono onr ons oo- oob ooc ood oog ooi oon ooo oor oos or- orb orc ord ore org ori orn oro orr ors os- osb osc osd ose osg osi osn oso osr oss rbb rbc rbd rbe rbg rbi rbn rbo rbr rbs rcb rcc rcd rce rcg rci rcn rco rcr rcs rdb rdc rdd rde rdg rdi rdn rdo rdr rds re- reb rec red ree reg rei ren reo rer res rgb rgc rgd rge rgg rgi rgn rgo rgr rgs rib ric rid rie rig rii rin rio rir ris rnb rnc rnd rng rni rnn rno rnr rns rob roc rod roe rog roi ron roo ror ros rrb rrc rrd rrg rri rrn rrr rrs rsb rsc rsd rse rsg rsi rsn rso rsr rss sbb sbc sbd sbe sbg sbi sbn sbo sbr sbs scb scc scd sce scg sci scn sco scr scs sdb sdc sdd sde sdg sdi sdn sdo sdr sds se- seb sec sed see seg sei sen seo ser ses sgb sgc sgd sge sgg sgi sgn sgo sgr sgs sib sic sid sie sig sii sin sio sir sis snb snc snd sne sng sni snn sno snr sns sob soc sod soe sog soi son soo sor sos sr- srb src srd sre srg sri