a-a a-b a-i a-t a-z aaa aab aai aan aar aas aat aaz ab- aba abb abi abn abr abs abt abz ai- aia aib aii ain air ais ait aiz an- ana anb ani ann anr ans ant anz ar- ara arb ari arn arr ars art arz as- asa asb asi asn asr ass ast asz at- ata atb ati atn atr ats att atz az- aza azb azi azn azs azt azz baa bab bai ban bar bas bat baz bba bbb bbi bbn bbr bbs bbt bi- bia bib bii bin bir bis bit biz bna bnb bni bnn bnr bns bnt bnz bra brb bri brn brr brs brt brz bsa bsb bsi bsn bsr bss bst bta btb bti btn btr bts btt btz bza bzn bzr bzs bzz ia- iaa iab iai ian iar ias iat iaz iba ibb ibi ibn ibr ibs ibt ibz iia iib iii iin iir iis iit in- ina inb ini inn inr ins int ir- ira irb iri irn irr irs irt is- isa isb isi isn isr iss ist ita itb iti itn its itt itz iza izi izz n-i naa nab nai nan nar nas nat naz nba nbb nbi nbn nbr nbs nbt nia nib nii nin nir nis nit niz nna nnb nni nnn nns nnt nnz nra nrb nri nrn nrr nrs nrt nrz nsa nsb nsi nsn nsr nss nst nsz nta ntb nti ntn ntr nts ntt ntz nzb nzi nzs nzz ra- raa rab rai ran rar ras rat raz rba rbb rbi rbn rbr rbs rbt ria rib rii rin rir ris rit riz rna rnb rni rnn rnr rns rnt rnz rra rrb rri rrn rrr rrs rrt rsa rsb rsi rsn rsr rss rst rta rtb rti rtn rtr rts rtt rtz rza rzb saa sab sai san sar sas sat saz sba sbb sbi sbn sbr sbs sbt sia sib sii sin sir sis sit sna snb sni snn snr sns snt sr- sra srb sri srn srr srs srt ss- ssa ssb ssi ssn ssr sss sst ssz sta stb sti stn str sts stt stz sza szi szr taa tab tai tan tar tas tat taz tba tbb tbi tbn tbr tbs tbt tbz tia tib tii tin tir tis tit tiz tna tnb tni tnn tnr tns tnt tnz tra trb tri trn trr trs trt trz tsa tsb tsi tsn tsr tss tst tta ttb tti ttn ttr tts ttt tza tzs zaa zab zai zan zar zas zat zaz zbb zbr zbs zbt zia zib zin zir zis zit ziz znn zns zrs zsa zsi zst zsz zta ztr zzr zzs zzt zzz