a-a a-b a-i a-q a-t aaa aab aag aai aan aaq aar aas aat ab- aba abb abg abi abn abq abr abs abt ag- aga agb agg agi agn agq agr ags agt ai- aia aib aig aii ain aiq air ais ait an- ana anb ang ani ann anq anr ans ant aqa aqi aqn aqr aqs aqt ar- ara arb arg ari arn arq arr ars art as- asa asb asg asi asn asq asr ass ast at- ata atb atg ati atn atr ats att baa bab bag bai ban baq bar bas bat bba bbb bbg bbi bbn bbq bbr bbs bbt bga bgb bgg bgi bgn bgr bgs bgt bi- bia bib big bii bin bir bis bit bna bnb bng bni bnn bnr bns bnt bqt bra brb brg bri brn brq brr brs brt bsa bsb bsg bsi bsn bsr bss bst bta btb btg bti btn btq btr bts btt gaa gab gag gai gan gar gas gat gba gbg gbi gbn gbr gbs gbt gga ggb ggg ggi ggn ggr ggs ggt gia gib gig gii gin gir gis git gna gnb gni gnn gnr gns gnt gqs gra grb grg gri grn grq grr grs grt gsa gsb gsg gsi gsn gsr gss gst gta gtb gtg gti gtn gtq gtr gts gtt ia- iaa iab iag iai ian iaq iar ias iat iba ibb ibg ibi ibn ibr ibs ibt iga igb igg igi ign igr igs igt iia iib iii iin iir iis iit in- ina inb ing ini inn inq inr ins int iqa iqs iqt ir- ira irb irg iri irn irq irr irs irt is- isa isb isg isi isn isq isr iss ist ita itb itg iti itn itq its itt n-i naa nab nag nai nan nar nas nat nba nbb nbg nbi nbn nbr nbs nbt nga ngb ngg ngi ngn ngs ngt nia nib nig nii nin niq nir nis nit nna nnb nng nni nnn nns nnt nqs nqt nra nrb nrg nri nrn nrr nrs nrt nsa nsb nsg nsi nsn nsr nss nst nta ntb ntg nti ntn ntq ntr nts ntt qaa qag qan qar qas qat qba qbq qbs qga qgn qin qir qis qit qnb qni qns qqq qra qrb qrg qri qrs qrt qsa qsi qsr qst qta qti qtq qtr qts ra- raa rab rag rai ran raq rar ras rat rba rbb rbg rbi rbn rbr rbs rbt rga rgb rgg rgi rgn rgr rgs rgt ria rib rig rii rin riq rir ris rit rna rnb rng rni rnn rnr rns rnt rqn rqs rra rrb rrg rri rrn rrq rrr rrs rrt rsa rsb rsg rsi rsn rsq rsr rss rst rta rtb rtg rti rtn rtq rtr rts rtt saa sab sag sai san saq sar sas sat sba sbb sbg sbi sbn sbq sbr sbs sbt sga sgb sgg sgi sgn sgr sgs sgt sia sib sig sii sin siq sir sis sit sna snb sng sni snn snr sns snt sqa sqi sqn sqq sqr sqs sr- sra srb srg sri srn srq srr srs srt ss- ssa ssb ssg ssi ssn ssq ssr sss sst sta stb stg sti stn stq str sts stt taa tab tag tai tan taq tar tas tat tba tbb tbg tbi tbn tbr tbs tbt tga tgb tgg tgi tgn tgr tgs tgt tia tib tig tii tin tir tis tit tna tnb tng tni tnn tnq tnr tns tnt tra trb trg tri trn trq trr trs trt tsa tsb tsg tsi tsn tsq tsr tss tst tta ttb ttg tti ttn ttr tts ttt