-er -ic bbb bbc bbe bbg bbh bbi bbr bbs bcb bcc bce bcg bch bci bcr bcs be- beb bec bee beg beh bei ber bes bgb bgc bge bgg bgh bgi bgr bgs bhb bhc bhe bhg bhh bhi bhr bhs bi- bib bic bie big bih bii bir bis brb bre brg brh bri brr brs bsb bsc bse bsg bsh bsi bsr bss c-- cbb cbc cbe cbg cbh cbi cbr cbs ccb ccc cce ccg cch cci ccr ccs ce- ceb cec cee ceg ceh cei cer ces cgb cgc cge cgg cgh cgi cgr cgs ch- chb chc che chg chh chi chr chs ci- cib cic cie cig cih cii cir cis crb crc cre crg crh cri crr crs csb csc cse csg csh csi csr css ebb ebc ebe ebg ebh ebi ebr ebs ec- ecb ecc ece ecg ech eci ecr ecs eeb eec eee eeg eer ees egb egc ege egg egh egi egr egs ehb ehc ehe ehg ehh ehi ehr ehs eib eic eie eig eii eir eis erb erc ere erg erh eri err ers es- esb esc ese esg esh esi esr ess gbc gbe gbg gbh gbi gbr gbs gcb gcc gce gcg gch gci gcr gcs ge- geb gec gee geg geh gei ger ges ggb ggc ggg ggh ggi ggr ggs ghb ghc ghe ghg ghh ghi ghr ghs gib gic gie gig gih gii gir gis grb grc gre grg grh gri grr grs gsb gsc gse gsg gsi gsr gss h-i hbb hbc hbe hbg hbh hbi hbr hbs hcb hcc hce hcg hch hci hcr hcs he- heb hec hee heg heh hei her hes hgb hgc hge hgg hgh hgi hgr hgs hhb hhc hhe hhg hhh hhi hhr hhs hib hic hie hig hih hii hir his hr- hrb hrc hre hrg hrh hri hrr hrs hsb hsc hse hsg hsh hsi hsr hss ibb ibc ibe ibg ibh ibi ibr ibs icb icc ice icg ich ici icr ics ie- iec iee ieg iei ier ies igb igc ige igg igh igi igr igs ihb ihc ihe ihg ihh ihi ihr ihs iib iic iie iih iii iir iis ir- irb irc ire irg iri irr irs is- isb isc ise isg ish isi isr iss rbb rbc rbe rbg rbh rbi rbr rbs rcb rcc rce rcg rch rci rcr rcs re- reb rec ree reg reh rei rer res rgb rgc rge rgg rgh rgi rgr rgs rh- rhb rhc rhe rhg rhh rhi rhr rhs rib ric rie rig rih rii rir ris rrb rrc rrg rrh rri rrr rrs rsb rsc rse rsg rsh rsi rsr rss sbb sbc sbe sbg sbh sbi sbr sbs scb scc sce scg sch sci scr scs se- seb sec see seg seh sei ser ses sgb sgc sge sgg sgh sgi sgr sgs sh- shb shc she shg shh shi shr shs sib sic sie sig sih sii sir sis sr- srb src sre srg srh sri srr srs ss- ssb ssc sse ssg ssh ssi ssr sss