-er a-a a-b a-q aaa aab aae aag aao aaq aar aas aau ab- aba abb abe abg abo abq abr abs abu aea aeb aee aeg aeo aeq aer aes aeu ag- aga agb age agg ago agq agr ags agu aoa aob aoe aog aoo aor aos aou aqa aqo aqr aqs ar- ara arb are arg aro arq arr ars aru as- asa asb ase asg aso asq asr ass asu au- aua aub aue aug auo aur aus b-u baa bab bae bag bao baq bar bas bau bba bbb bbe bbg bbo bbq bbr bbs bbu be- bea beb bee beg beo beq ber bes beu bga bgb bge bgg bgo bgr bgs bgu boa bob boe bog boo boq bor bos bou bqe bra brb bre brg bro brq brr brs bru bsa bsb bse bsg bso bsr bss bsu bua bub bue bug buo bur bus buu eaa eab eae eag eao ear eas eau eba ebb ebe ebg ebo ebq ebr ebs ebu eea eeb eee eeg eeo eer ees ega egb ege egg ego egr egs egu eo- eoa eob eoe eog eoo eoq eor eos eou eqa eqe eqq eqs equ era erb ere erg ero erq err ers eru es- esa esb ese esg eso esq esr ess esu eu- eua eub eue eug eur eus gaa gab gae gag gao gar gas gau gba gbe gbg gbo gbr gbs gbu ge- gea geb gee geg geo ger ges geu gga ggb ggg ggo ggr ggs ggu goa gob goe gog goo goq gor gos gou gqs gra grb gre grg gro grq grr grs gru gsa gsb gse gsg gso gsr gss gsu gu- gua gub gue gug guo gur gus guu oaa oab oae oag oao oaq oar oas oau ob- oba obb obe obg obo obr obs obu oea oeb oee oeg oeo oer oes oga oge ogg ogo ogs oo- ooa oob oog ooo oor oos oqb oqo or- ora orb ore org oro orr ors oru os- osa osb ose osg oso osq osr oss osu ou- oua oue ouo our ous qaa qag qar qas qau qba qbe qbq qbs qee qeo qga qoo qor qos qqq qqu qra qrb qre qrg qrs qru qsa qso qsr qu- qua que quo qur qus ra- raa rab rae rag rao raq rar ras rau rba rbb rbe rbg rbo rbr rbs rbu re- rea reb ree reg reo req rer res reu rga rgb rge rgg rgo rgr rgs roa rob roe rog roo ror ros rou rqs rra rrb rrg rrq rrr rrs rru rsa rsb rse rsg rso rsq rsr rss rsu rua rub rue rug ruo rur rus ruu saa sab sae sag sao saq sar sas sau sba sbb sbe sbg sbo sbq sbr sbs sbu se- sea seb see seg seo seq ser ses seu sga sgb sge sgg sgo sgr sgs sgu soa sob soe sog soo soq sor sos sou sqa sqq sqr sqs sr- sra srb sre srg sro srq srr srs ss- ssa ssb sse ssg sso ssq ssr sss ssu sua sub sue sug suo suq sur sus suu ua- uaa uab uae uag uao uaq uar uas uau uba ubb ube ubg ubo ubr ubs ubu uea ueb uee ueg uer ues uga ugb uge ugg ugo ugr ugs ugu uoa uob uoe uog uoo uor uos ur- ura urb ure urg uro urr urs uru usa usb use usg uso usr uss usu uua uue uug uur uus uuu