a-a a-b a-i aaa aab aad aag aai aao aar aas aau ab- aba abb abd abg abi abo abr abs abu ad- ada adb add adg adi ado adr ads adu ag- aga agb agd agg agi ago agr ags agu ai- aia aib aid aig aii aio air ais aiu aoa aob aod aog aoi aoo aor aos aou ar- ara arb ard arg ari aro arr ars aru as- asa asb asd asg asi aso asr ass asu au- aua aub aud aug aui auo aur aus b-u baa bab bad bag bai bao bar bas bau bba bbb bbd bbg bbi bbo bbr bbs bbu bda bdb bdd bdg bdi bdo bdr bds bdu bga bgb bgd bgg bgi bgo bgr bgs bgu bi- bia bib bid big bii bio bir bis biu boa bob bod bog boi boo bor bos bou bra brb brd brg bri bro brr brs bru bsa bsb bsd bsg bsi bso bsr bss bsu bua bub bud bug bui buo bur bus buu daa dab dad dag dai dao dar das dau dba dbb dbd dbg dbi dbo dbr dbs dbu dda ddb ddd ddg ddi ddo ddr dds ddu dga dgd dgg dgi dgr dgs dgu di- dia dib did dig dii dio dir dis diu doa dob dod dog doi doo dor dos dou dra drb drd drg dri dro drr drs dru dsa dsb dsd dsg dsi dso dsr dss dsu dua dub dud dug dui duo dur dus g-d gaa gab gad gag gai gao gar gas gau gba gbd gbg gbi gbo gbr gbs gbu gda gdb gdd gdi gdo gdr gds gdu gga ggb ggd ggg ggi ggo ggr ggs ggu gia gib gid gig gii gio gir gis giu goa gob god gog goi goo gor gos gou gra grb grd grg gri gro grr grs gru gsa gsb gsd gsg gsi gso gsr gss gsu gu- gua gub gud gug gui guo gur gus guu i-d ia- iaa iab iad iag iai iao iar ias iau iba ibb ibd ibg ibi ibo ibr ibs ibu ida idb idd idg idi ido idr ids idu iga igb igd igg igi igo igr igs igu iia iib iid iii iio iir iis iiu io- ioa iob iod iog ioi ioo ior ios iou ir- ira irb ird irg iri iro irr irs iru is- isa isb isd isg isi iso isr iss isu iu- iua iub iud iug iui iur ius o-i oaa oab oad oag oai oao oar oas oau ob- oba obb obd obg obi obo obr obs obu oda odb odd odg odi odo odr ods odu oga ogd ogg ogi ogo ogs oia oib oid oii oio oir ois oiu oo- ooa oob ood oog ooi ooo oor oos or- ora orb ord org ori oro orr ors oru os- osa osb osd osg osi oso osr oss osu ou- oua oud oui ouo our ous ra- raa rab rad rag rai rao rar ras rau rba rbb rbd rbg rbi rbo rbr rbs rbu rda rdb rdd rdg rdi rdo rdr rds rdu rga rgb rgd rgg rgi rgo rgr rgs ria rib rid rig rii rio rir ris roa rob rod rog roi roo ror ros rou rra rrb rrd rrg rri rrr rrs rru rsa rsb rsd rsg rsi rso rsr rss rsu rua rub rud rug rui ruo rur rus ruu saa sab sad sag sai sao sar sas sau sba sbb sbd sbg sbi sbo sbr sbs sbu sda sdb sdd sdg sdi sdo sdr sds sdu sga sgb sgd sgg sgi sgo sgr sgs sgu sia sib sid sig sii sio sir sis siu soa sob sod sog soi soo sor sos sou sr- sra srb srd srg sri sro srr srs ss- ssa ssb ssd ssg ssi sso ssr sss ssu sua sub sud sug sui suo sur sus suu ua- uaa uab uad uag uai uao uar uas uau uba ubb ubg ubi ubo ubr ubs ubu uda udb udd udg udi udo udr uds udu uga ugb ugg ugi ugo ugr ugs ugu uia uib uid uig uii uio uir uis uiu uoa uob uod uog uoo uor uos ur- ura urb urd urg uri uro urr urs uru usa usb usd usg usi uso usr uss usu uua uug uur uus uuu