-er bbb bbc bbe bbg bbh bbn bbr bbs bcb bcc bce bcg bch bcn bcr bcs be- beb bec bee beg beh ben ber bes bgb bgc bge bgg bgh bgn bgr bgs bhb bhc bhe bhg bhh bhr bhs bnb bnc bne bng bnn bnr bns brb bre brg brh brn brr brs bsb bsc bse bsg bsh bsn bsr bss c-- cbb cbc cbe cbg cbh cbn cbr cbs ccb ccc cce ccg cch ccn ccr ccs ce- ceb cec cee ceg ceh cen cer ces cgb cgc cge cgg cgh cgn cgr cgs ch- chb chc che chg chh chn chr chs cn- cnb cnc cne cng cnh cnn cnr cns crb crc cre crg crh crn crr crs csb csc cse csg csh csn csr css ebb ebc ebe ebg ebh ebn ebr ebs ec- ecb ecc ece ecg ech ecn ecr ecs eeb eec eee eeg een eer ees egb egc ege egg egh egn egr egs ehb ehc ehe ehg ehh ehn ehr ehs en- enb enc ene eng enh enn enr ens erb erc ere erg erh ern err ers es- esb esc ese esg esh esn esr ess gbc gbe gbg gbh gbn gbr gbs gcb gcc gce gcg gch gcn gcr gcs ge- geb gec gee geg geh gen ger ges ggb ggc ggg ggh ggn ggr ggs ghb ghc ghe ghg ghh ghn ghr ghs gnb gnc gne gnn gnr gns grb grc gre grg grh grn grr grs gsb gsc gse gsg gsn gsr gss hbb hbc hbe hbg hbh hbn hbr hbs hcb hcc hce hcg hch hcn hcr hcs he- heb hec hee heg heh hen her hes hgb hgc hge hgg hgh hgn hgr hgs hhb hhc hhe hhg hhh hhn hhr hhs hnb hnc hne hng hnh hnn hns hr- hrb hrc hre hrg hrh hrn hrr hrs hsb hsc hse hsg hsh hsn hsr hss nbb nbc nbe nbg nbn nbr nbs ncb ncc nce ncg nch ncn ncr ncs ne- neb nec nee neg neh nen ner nes ngb ngc nge ngg ngh ngn ngs nhb nhc nhe nhg nhh nhn nhr nhs nnb nnc nne nng nnh nnn nns nrb nrc nre nrg nrn nrr nrs nsb nsc nse nsg nsh nsn nsr nss rbb rbc rbe rbg rbh rbn rbr rbs rcb rcc rce rcg rch rcn rcr rcs re- reb rec ree reg reh ren rer res rgb rgc rge rgg rgh rgn rgr rgs rh- rhb rhc rhe rhg rhh rhn rhr rhs rnb rnc rng rnh rnn rnr rns rrb rrc rrg rrh rrn rrr rrs rsb rsc rse rsg rsh rsn rsr rss sbb sbc sbe sbg sbh sbn sbr sbs scb scc sce scg sch scn scr scs se- seb sec see seg seh sen ser ses sgb sgc sge sgg sgh sgn sgr sgs sh- shb shc she shg shh shn shr shs snb snc sne sng snn snr sns sr- srb src sre srg srh srn srr srs ss- ssb ssc sse ssg ssh ssn ssr sss