-er b-u bbb bbc bbe bbg bbh bbo bbr bbs bbu bcb bcc bce bcg bch bco bcr bcs bcu be- beb bec bee beg beh beo ber bes beu bgb bgc bge bgg bgh bgo bgr bgs bgu bhb bhc bhe bhg bhh bho bhr bhs bhu bob boc boe bog boh boo bor bos bou brb bre brg brh bro brr brs bru bsb bsc bse bsg bsh bso bsr bss bsu bub buc bue bug buh buo bur bus buu c-- cbb cbc cbe cbg cbh cbo cbr cbs cbu ccb ccc cce ccg cch cco ccr ccs ccu ce- ceb cec cee ceg ceh ceo cer ces ceu cgb cgc cge cgg cgh cgo cgr cgs cgu ch- chb chc che chg chh cho chr chs chu co- cob coc coe cog coh coo cor cos cou crb crc cre crg crh cro crr crs cru csb csc cse csg csh cso csr css csu cub cuc cue cug cuh cuo cur cus cuu ebb ebc ebe ebg ebh ebo ebr ebs ebu ec- ecb ecc ece ecg ech eco ecr ecs ecu eeb eec eee eeg eeo eer ees egb egc ege egg egh ego egr egs egu ehb ehc ehe ehg ehh eho ehr ehs ehu eo- eob eoc eoe eog eoh eoo eor eos eou erb erc ere erg erh ero err ers eru es- esb esc ese esg esh eso esr ess esu eu- eub euc eue eug eur eus gbc gbe gbg gbh gbo gbr gbs gbu gcb gcc gce gcg gch gco gcr gcs gcu ge- geb gec gee geg geh geo ger ges geu ggb ggc ggg ggh ggo ggr ggs ggu ghb ghc ghe ghg ghh gho ghr ghs gob goc goe gog goh goo gor gos gou grb grc gre grg grh gro grr grs gru gsb gsc gse gsg gso gsr gss gsu gu- gub guc gue gug guo gur gus guu hbb hbc hbe hbg hbh hbo hbr hbs hbu hcb hcc hce hcg hch hco hcr hcs he- heb hec hee heg heh heo her hes heu hgb hgc hge hgg hgh hgo hgr hgs hgu hhb hhc hhe hhg hhh hho hhr hhs hhu hob hoc hoe hog hoh hoo hor hos hou hr- hrb hrc hre hrg hrh hro hrr hrs hru hsb hsc hse hsg hsh hsr hss hsu hub huc hue hug huh huo hur hus huu ob- obb obc obe obg obh obo obr obs obu oc- ocb occ ocg och oco ocr ocs ocu oeb oec oee oeg oeh oeo oer oes ogc oge ogg ogh ogo ogs ohc ohe ohg ohh oho ohr ohs ohu oo- oob ooc oog ooh ooo oor oos or- orb orc ore org orh oro orr ors oru os- osb osc ose osg osh oso osr oss osu ou- ouc oue ouh ouo our ous rbb rbc rbe rbg rbh rbo rbr rbs rbu rcb rcc rce rcg rch rco rcr rcs rcu re- reb rec ree reg reh reo rer res reu rgb rgc rge rgg rgh rgo rgr rgs rh- rhb rhc rhe rhg rhh rho rhr rhs rhu rob roc roe rog roh roo ror ros rou rrb rrc rrg rrh rrr rrs rru rsb rsc rse rsg rsh rso rsr rss rsu rub ruc rue rug ruh ruo rur rus ruu sbb sbc sbe sbg sbh sbo sbr sbs sbu scb scc sce scg sch sco scr scs scu se- seb sec see seg seh seo ser ses seu sgb sgc sge sgg sgh sgo sgr sgs sgu sh- shb shc she shg shh sho shr shs shu sob soc soe sog soh soo sor sos sou sr- srb src sre srg srh sro srr srs ss- ssb ssc sse ssg ssh sso ssr sss ssu sub suc sue sug suh suo sur sus suu ubb ubc ube ubg ubh ubo ubr ubs ubu ucb ucc uce ucg uch uco ucr ucs ucu ueb uec uee ueg ueh uer ues ugb ugc uge ugg ugh ugo ugr ugs ugu uhb uhc uhe uhh uho uhr uhs uhu uob uoc uoe uog uoo uor uos ur- urb urc ure urg uro urr urs uru usb usc use usg ush uso usr uss usu uuc uue uug uur uus uuu