-er b-u bbb bbe bbg bbi bbk bbr bbs bbu be- beb bee beg bei bek ber bes beu bgb bge bgg bgi bgk bgr bgs bgu bi- bib bie big bii bik bir bis biu bkb bke bkg bkk bkr bks brb bre brg bri brk brr brs bru bsb bse bsg bsi bsk bsr bss bsu bub bue bug bui buk bur bus buu ebb ebe ebg ebi ebk ebr ebs ebu eeb eee eeg eek eer ees egb ege egg egi egr egs egu eib eie eig eii eik eir eis eiu ekb eke ekg eki ekr eks eku erb ere erg eri erk err ers eru es- esb ese esg esi esk esr ess esu eu- eub eue eug eui eur eus gbe gbg gbi gbk gbr gbs gbu ge- geb gee geg gei gek ger ges geu ggb ggg ggi ggr ggs ggu gib gie gig gii gik gir gis giu gkb gks grb gre grg gri grk grr grs gru gsb gse gsg gsi gsk gsr gss gsu gu- gub gue gug gui guk gur gus guu ibb ibe ibg ibi ibk ibr ibs ibu ie- iee ieg iei iek ier ies igb ige igg igi igk igr igs igu iib iie iii iir iis iiu ikb ike iki ikk ikr iks iku ir- irb ire irg iri irk irr irs iru is- isb ise isg isi isk isr iss isu iu- iub iue iug iui iur ius kbb kbe kbi kbk kbr kbs kbu ke- keb kee keg kei kek ker kes kgb kgi kgs kgu kib kie kig kii kik kir kis kiu kkb kke kki kkk kkr kks kku krg kri krk krr krs kru ksb kse ksg ksi ksk ksr kss ksu kub kue kug kui kuk kur kus kuu rbb rbe rbg rbi rbk rbr rbs rbu re- reb ree reg rei rek rer res reu rgb rge rgg rgi rgk rgr rgs rib rie rig rii rik rir ris rkb rke rkg rkk rks rku rrb rrg rri rrk rrr rrs rru rsb rse rsg rsi rsk rsr rss rsu rub rue rug rui ruk rur rus ruu sbb sbe sbg sbi sbk sbr sbs sbu se- seb see seg sei sek ser ses seu sgb sge sgg sgi sgk sgr sgs sgu sib sie sig sii sik sir sis siu sk- skb ske skg ski skk skr sks sku sr- srb sre srg sri srk srr srs ss- ssb sse ssg ssi ssk ssr sss ssu sub sue sug sui suk sur sus suu ubb ube ubg ubi ubk ubr ubs ubu ueb uee ueg uei uer ues ugb uge ugg ugi ugk ugr ugs ugu uib uie uig uii uir uis uiu ukb uke uki ukk ukr uku ur- urb ure urg uri urk urr urs uru usb use usg usi usk usr uss usu uue uug uur uus uuu

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