-er a-a a-b aaa aab aae aaj aan aao aar aas aau ab- aba abb abe abj abn abo abr abs abu aea aeb aee aej aen aeo aer aes aeu aja ajb aje ajj ajn ajo ajr ajs aju an- ana anb ane anj ann ano anr ans anu aoa aob aoe aoj aon aoo aor aos aou ar- ara arb are arj arn aro arr ars aru as- asa asb ase asj asn aso asr ass asu au- aua aub aue auj aun auo aur aus b-u baa bab bae baj ban bao bar bas bau bba bbb bbe bbn bbo bbr bbs bbu be- bea beb bee ben beo ber bes beu bja bjj bjn bjr bjs bju bna bnb bne bnj bnn bno bnr bns bnu boa bob boe boj bon boo bor bos bou bra brb bre brj brn bro brr brs bru bsa bsb bse bsj bsn bso bsr bss bsu bua bub bue buj bun buo bur bus buu eaa eab eae eaj ean eao ear eas eau eba ebb ebe ebj ebn ebo ebr ebs ebu eea eeb eee een eeo eer ees eja ejo eju en- ena enb ene enn eno enr ens enu eo- eoa eob eoe eon eoo eor eos eou era erb ere ern ero err ers eru es- esa esb ese esn eso esr ess esu eu- eua eub eue euj eun eur eus jaa jab jae jaj jan jao jar jas jau jba jbj jbo jbr jbs jbu jea jeb jee jej jen jeo jer jes jeu jja jjb jjj jjr jjs jju jna jne jnj jnn jno jnr jns jnu joa job joe joj jon joo jor jos jou jra jrb jrn jro jrr jrs jsa jsb jse jsj jsn jso jsr jss jsu jub jue jun juo jur jus naa nab nae naj nan nao nar nas nau nba nbb nbe nbn nbo nbr nbs nbu ne- nea neb nee nej nen neo ner nes neu nja nje njn njs nju nna nnb nne nnn nno nns nnu no- noa nob noe noj non noo nor nos nou nra nrb nre nrj nrn nro nrr nrs nru nsa nsb nse nsn nso nsr nss nsu nua nub nue nuj nun nuo nur nus nuu oaa oab oae oaj oan oao oar oas oau ob- oba obb obe obj obn obo obr obs obu oea oeb oee oen oeo oer oes oja ojb oje ojo ojs oju on- ona onb one onj onn ono onr ons onu oo- ooa oob oon ooo oor oos or- ora orb ore orn oro orr ors oru os- osa osb ose osj osn oso osr oss osu ou- oua oue oun ouo our ous ra- raa rab rae raj ran rao rar ras rau rba rbb rbe rbn rbo rbr rbs rbu re- rea reb ree ren reo rer res reu rja rjr rna rnb rnn rno rnr rns rnu roa rob roe roj ron roo ror ros rou rra rrb rrn rrr rrs rru rsa rsb rse rsj rsn rso rsr rss rsu rua rub rue run ruo rur rus ruu saa sab sae saj san sao sar sas sau sba sbb sbe sbj sbn sbo sbr sbs sbu se- sea seb see sej sen seo ser ses seu sja sjb sje sjj sjr sjs sju sna snb sne snj snn sno snr sns snu soa sob soe soj son soo sor sos sou sr- sra srb sre srj srn sro srr srs ss- ssa ssb sse ssj ssn sso ssr sss ssu sua sub sue sun suo sur sus suu ua- uaa uab uae uaj uan uao uar uas uau uba ubb ube ubn ubo ubr ubs ubu uea ueb uee uen uer ues ujo ujs un- una unb une unn uno unr uns unu uoa uob uoe uoj uon uoo uor uos ur- ura urb ure urn uro urr urs uru usa usb use usj usn uso usr uss usu uua uue uun uur uus uuu