a-a a-b a-i aaa aab aad aag aai aan aar aas ab- aba abb abd abg abi abn abr abs ad- ada adb add adg adi adn adr ads ag- aga agb agd agg agi agn agr ags ai- aia aib aid aig aii ain air ais an- ana anb and ang ani ann anr ans ar- ara arb ard arg ari arn arr ars as- asa asb asd asg asi asn asr ass baa bab bad bag bai ban bar bas bba bbb bbd bbg bbi bbn bbr bbs bda bdb bdd bdg bdi bdr bds bga bgb bgd bgg bgi bgn bgr bgs bi- bia bib bid big bii bin bir bis bna bnb bnd bng bni bnn bnr bns bra brb brd brg bri brn brr brs bsa bsb bsd bsg bsi bsn bsr bss daa dab dad dag dai dan dar das dba dbb dbd dbg dbi dbn dbr dbs dda ddb ddd ddg ddi ddn ddr dds dga dgd dgg dgi dgn dgr dgs di- dia dib did dig dii din dir dis dna dnb dnd dng dni dnn dnr dns dra drb drd drg dri drn drr drs dsa dsb dsd dsg dsi dsn dsr dss g-d gaa gab gad gag gai gan gar gas gba gbd gbg gbi gbn gbr gbs gda gdb gdd gdi gdn gdr gds gga ggb ggd ggg ggi ggn ggr ggs gia gib gid gig gii gin gir gis gna gnb gnd gni gnn gnr gns gra grb grd grg gri grn grr grs gsa gsb gsd gsg gsi gsn gsr gss i-d ia- iaa iab iad iag iai ian iar ias iba ibb ibd ibg ibi ibn ibr ibs ida idb idd idg idi idn idr ids iga igb igd igg igi ign igr igs iia iib iid iii iin iir iis in- ina inb ind ing ini inn inr ins ir- ira irb ird irg iri irn irr irs is- isa isb isd isg isi isn isr iss n-i naa nab nad nag nai nan nar nas nba nbb nbd nbg nbi nbn nbr nbs nda ndb ndd ndg ndi ndn ndr nds nga ngb ngd ngg ngi ngn ngs nia nib nid nig nii nin nir nis nna nnb nng nni nnn nns nra nrb nrd nrg nri nrn nrr nrs nsa nsb nsd nsg nsi nsn nsr nss ra- raa rab rad rag rai ran rar ras rba rbb rbd rbg rbi rbn rbr rbs rda rdb rdd rdg rdi rdn rdr rds rga rgb rgd rgg rgi rgn rgr rgs ria rib rid rig rii rin rir ris rna rnb rnd rng rni rnn rnr rns rra rrb rrd rrg rri rrn rrr rrs rsa rsb rsd rsg rsi rsn rsr rss saa sab sad sag sai san sar sas sba sbb sbd sbg sbi sbn sbr sbs sda sdb sdd sdg sdi sdn sdr sds sga sgb sgd sgg sgi sgn sgr sgs sia sib sid sig sii sin sir sis sna snb snd sng sni snn snr sns sr- sra srb srd srg sri srn srr srs ss- ssa ssb ssd ssg ssi ssn ssr sss