-er a-a a-b a-i aaa aab aad aae aag aai aao aar aas aau ab- aba abb abd abe abg abi abo abr abs abu ad- ada adb add ade adg adi ado adr ads adu aea aeb aed aee aeg aei aeo aer aes aeu ag- aga agb agd age agg agi ago agr ags agu ai- aia aib aid aie aig aii aio air ais aiu aoa aob aod aoe aog aoi aoo aor aos aou ar- ara arb ard are arg ari aro arr ars aru as- asa asb asd ase asg asi aso asr ass asu au- aua aub aud aue aug aui auo aur aus b-u baa bab bad bae bag bai bao bar bas bau bba bbb bbd bbe bbg bbi bbo bbr bbs bbu bda bdb bdd bde bdg bdi bdo bdr bds bdu be- bea beb bed bee beg bei beo ber bes beu bga bgb bgd bge bgg bgi bgo bgr bgs bgu bi- bia bib bid bie big bii bio bir bis biu boa bob bod boe bog boi boo bor bos bou bra brb brd bre brg bri bro brr brs bru bsa bsb bsd bse bsg bsi bso bsr bss bsu bua bub bud bue bug bui buo bur bus buu daa dab dad dae dag dai dao dar das dau dba dbb dbd dbe dbg dbi dbo dbr dbs dbu dda ddb ddd dde ddg ddi ddo ddr dds ddu de- dea deb ded dee deg dei deo der des deu dga dgd dge dgg dgi dgr dgs dgu di- dia dib did die dig dii dio dir dis diu doa dob dod doe dog doi doo dor dos dou dra drb drd dre drg dri dro drr drs dru dsa dsb dsd dse dsg dsi dso dsr dss dsu dua dub dud due dug dui duo dur dus eaa eab ead eae eag eai eao ear eas eau eba ebb ebd ebe ebg ebi ebo ebr ebs ebu ed- eda edb edd ede edg edi edo edr eds edu eea eeb eed eee eeg eeo eer ees ega egb egd ege egg egi ego egr egs egu eia eib eid eie eig eii eio eir eis eiu eo- eoa eob eod eoe eog eoi eoo eor eos eou era erb erd ere erg eri ero err ers eru es- esa esb esd ese esg esi eso esr ess esu eu- eua eub eud eue eug eui eur eus g-d gaa gab gad gae gag gai gao gar gas gau gba gbd gbe gbg gbi gbo gbr gbs gbu gda gdb gdd gde gdi gdo gdr gds gdu ge- gea geb ged gee geg gei geo ger ges geu gga ggb ggd ggg ggi ggo ggr ggs ggu gia gib gid gie gig gii gio gir gis giu goa gob god goe gog goi goo gor gos gou gra grb grd gre grg gri gro grr grs gru gsa gsb gsd gse gsg gsi gso gsr gss gsu gu- gua gub gud gue gug gui guo gur gus guu i-d ia- iaa iab iad iae iag iai iao iar ias iau iba ibb ibd ibe ibg ibi ibo ibr ibs ibu ida idb idd ide idg idi ido idr ids idu ie- iea ied iee ieg iei ier ies iga igb igd ige igg igi igo igr igs igu iia iib iid iie iii iio iir iis iiu io- ioa iob iod ioe iog ioi ioo ior ios iou ir- ira irb ird ire irg iri iro irr irs iru is- isa isb isd ise isg isi iso isr iss isu iu- iua iub iud iue iug iui iur ius o-i oaa oab oad oae oag oai oao oar oas oau ob- oba obb obd obe obg obi obo obr obs obu oda odb odd ode odg odi odo odr ods odu oea oeb oed oee oeg oei oeo oer oes oga ogd oge ogg ogi ogo ogs oia oib oid oie oii oio oir ois oiu oo- ooa oob ood oog ooi ooo oor oos or- ora orb ord ore org ori oro orr ors oru os- osa osb osd ose osg osi oso osr oss osu ou- oua oud oue oui ouo our ous ra- raa rab rad rae rag rai rao rar ras rau rba rbb rbd rbe rbg rbi rbo rbr rbs rbu rda rdb rdd rde rdg rdi rdo rdr rds rdu re- rea reb red ree reg rei reo rer res reu rga rgb rgd rge rgg rgi rgo rgr rgs ria rib rid rie rig rii rio rir ris roa rob rod roe rog roi roo ror ros rou rra rrb rrd rrg rri rrr rrs rru rsa rsb rsd rse rsg rsi rso rsr rss rsu rua rub rud rue rug rui ruo rur rus ruu saa sab sad sae sag sai sao sar sas sau sba sbb sbd sbe sbg sbi sbo sbr sbs sbu sda sdb sdd sde sdg sdi sdo sdr sds sdu se- sea seb sed see seg sei seo ser ses seu sga sgb sgd sge sgg sgi sgo sgr sgs sgu sia sib sid sie sig sii sio sir sis siu soa sob sod soe sog soi soo sor sos sou sr- sra srb srd sre srg sri sro srr srs ss- ssa ssb ssd sse ssg ssi sso ssr sss ssu sua sub sud sue sug sui suo sur sus suu ua- uaa uab uad uae uag uai uao uar uas uau uba ubb ube ubg ubi ubo ubr ubs ubu uda udb udd ude udg udi udo udr uds udu uea ueb ued uee ueg uei uer ues uga ugb uge ugg ugi ugo ugr ugs ugu uia uib uid uie uig uii uio uir uis uiu uoa uob uod uoe uog uoo uor uos ur- ura urb urd ure urg uri uro urr urs uru usa usb usd use usg usi uso usr uss usu uua uue uug uur uus