a-a a-b a-i aaa aab aag aai aam aan aar aas ab- aba abb abg abi abm abn abr abs ag- aga agb agg agi agm agn agr ags ai- aia aib aig aii aim ain air ais ama amb amg ami amm amn amr ams an- ana anb ang ani anm ann anr ans ar- ara arb arg ari arm arn arr ars as- asa asb asg asi asm asn asr ass baa bab bag bai bam ban bar bas bba bbb bbg bbi bbm bbn bbr bbs bga bgb bgg bgi bgm bgn bgr bgs bi- bia bib big bii bim bin bir bis bma bmb bmg bmi bmm bmn bmr bms bna bnb bng bni bnn bnr bns bra brb brg bri brm brn brr brs bsa bsb bsg bsi bsm bsn bsr bss gaa gab gag gai gam gan gar gas gba gbg gbi gbm gbn gbr gbs gga ggb ggg ggi ggm ggn ggr ggs gia gib gig gii gim gin gir gis gma gmb gmg gmi gmm gmn gmr gms gna gnb gni gnm gnn gnr gns gra grb grg gri grm grn grr grs gsa gsb gsg gsi gsm gsn gsr gss ia- iaa iab iag iai iam ian iar ias iba ibb ibg ibi ibm ibn ibr ibs iga igb igg igi igm ign igr igs iia iib iii iim iin iir iis im- ima imb img imi imm imn ims in- ina inb ing ini inm inn inr ins ir- ira irb irg iri irm irn irr irs is- isa isb isg isi ism isn isr iss m-r maa mab mag mai mam man mar mas mba mbb mbg mbi mbm mbr mbs mga mgb mgi mgm mgn mgr mgs mi- mia mib mig mii mim min mir mis mma mmb mmg mmi mmm mmn mmr mms mna mnb mng mni mnm mnn mnr mns mra mrb mrg mri mrm mrn mrr mrs msa msb msg msi msm msn msr mss n-i naa nab nag nai nam nan nar nas nba nbb nbg nbi nbm nbn nbr nbs nga ngb ngg ngi ngm ngn ngs nia nib nig nii nim nin nir nis nma nmb nmg nmi nmm nmn nmr nms nna nnb nng nni nnm nnn nns nra nrb nrg nri nrm nrn nrr nrs nsa nsb nsg nsi nsm nsn nsr nss ra- raa rab rag rai ram ran rar ras rba rbb rbg rbi rbm rbn rbr rbs rga rgb rgg rgi rgn rgr rgs ria rib rig rii rim rin rir ris rma rmb rmg rmi rmm rmn rmr rms rna rnb rng rni rnm rnn rnr rns rra rrb rrg rri rrm rrn rrr rrs rsa rsb rsg rsi rsm rsn rsr rss saa sab sag sai sam san sar sas sba sbb sbg sbi sbm sbn sbr sbs sga sgb sgg sgi sgm sgn sgr sgs sia sib sig sii sim sin sir sis sma smb smg smi smm smn smr sms sna snb sng sni snm snn snr sns sr- sra srb srg sri srm srn srr srs ss- ssa ssb ssg ssi ssm ssn ssr sss