a-a a-b a-i aaa aab aad aag aai aar aas aau ab- aba abb abd abg abi abr abs abu ad- ada adb add adg adi adr ads adu ag- aga agb agd agg agi agr ags agu ai- aia aib aid aig aii air ais aiu ar- ara arb ard arg ari arr ars aru as- asa asb asd asg asi asr ass asu au- aua aub aud aug aui aur aus b-u baa bab bad bag bai bar bas bau bba bbb bbd bbg bbi bbr bbs bbu bda bdb bdd bdg bdi bdr bds bdu bga bgb bgd bgg bgi bgr bgs bgu bi- bia bib bid big bii bir bis biu bra brb brd brg bri brr brs bru bsa bsb bsd bsg bsi bsr bss bsu bua bub bud bug bui bur bus buu daa dab dad dag dai dar das dau dba dbb dbd dbg dbi dbr dbs dbu dda ddb ddd ddg ddi ddr dds ddu dga dgd dgg dgi dgr dgs dgu di- dia dib did dig dii dir dis diu dra drb drd drg dri drr drs dru dsa dsb dsd dsg dsi dsr dss dsu dua dub dud dug dui dur dus g-d gaa gab gad gag gai gar gas gau gba gbd gbg gbi gbr gbs gbu gda gdb gdd gdi gdr gds gdu gga ggb ggd ggg ggi ggr ggs ggu gia gib gid gig gii gir gis giu gra grb grd grg gri grr grs gru gsa gsb gsd gsg gsi gsr gss gsu gu- gua gub gud gug gui gur gus guu i-d ia- iaa iab iad iag iai iar ias iau iba ibb ibd ibg ibi ibr ibs ibu ida idb idd idg idi idr ids idu iga igb igd igg igi igr igs igu iia iib iid iii iir iis iiu ir- ira irb ird irg iri irr irs iru is- isa isb isd isg isi isr iss isu iu- iua iub iud iug iui iur ius ra- raa rab rad rag rai rar ras rau rba rbb rbd rbg rbi rbr rbs rbu rda rdb rdd rdg rdi rdr rds rdu rga rgb rgd rgg rgi rgr rgs ria rib rid rig rii rir ris rra rrb rrd rrg rri rrr rrs rru rsa rsb rsd rsg rsi rsr rss rsu rua rub rud rug rui rur rus ruu saa sab sad sag sai sar sas sau sba sbb sbd sbg sbi sbr sbs sbu sda sdb sdd sdg sdi sdr sds sdu sga sgb sgd sgg sgi sgr sgs sgu sia sib sid sig sii sir sis siu sr- sra srb srd srg sri srr srs ss- ssa ssb ssd ssg ssi ssr sss ssu sua sub sud sug sui sur sus suu ua- uaa uab uad uag uai uar uas uau uba ubb ubg ubi ubr ubs ubu uda udb udd udg udi udr uds udu uga ugb ugg ugi ugr ugs ugu uia uib uid uig uii uir uis uiu ur- ura urb urd urg uri urr urs uru usa usb usd usg usi usr uss usu uua uug uur uus uuu