a-a a-b a-i a-t aaa aab aai aam aan aao aar aas aat ab- aba abb abi abm abn abo abr abs abt ai- aia aib aii aim ain aio air ais ait ama amb ami amm amn amo amr ams amt an- ana anb ani anm ann ano anr ans ant aoa aob aoi aom aon aoo aor aos aot ar- ara arb ari arm arn aro arr ars art as- asa asb asi asm asn aso asr ass ast at- ata atb ati atm atn ato atr ats att baa bab bai bam ban bao bar bas bat bba bbb bbi bbm bbn bbo bbr bbs bbt bi- bia bib bii bim bin bio bir bis bit bma bmb bmi bmm bmn bmo bmr bms bmt bna bnb bni bnn bno bnr bns bnt boa bob boi bom bon boo bor bos bot bra brb bri brm brn bro brr brs brt bsa bsb bsi bsm bsn bso bsr bss bst bta btb bti btm btn bto btr bts btt ia- iaa iab iai iam ian iao iar ias iat iba ibb ibi ibm ibn ibo ibr ibs ibt iia iib iii iim iin iio iir iis iit im- ima imb imi imm imn imo ims imt in- ina inb ini inm inn ino inr ins int io- ioa iob ioi iom ion ioo ior ios iot ir- ira irb iri irm irn iro irr irs irt is- isa isb isi ism isn iso isr iss ist ita itb iti itm itn ito its itt m-o m-r maa mab mai mam man mao mar mas mat mba mbb mbi mbm mbo mbr mbs mbt mi- mia mib mii mim min mio mir mis mit mma mmb mmi mmm mmn mmo mmr mms mmt mna mnb mni mnm mnn mno mnr mns mnt moa mob moi mom mon moo mor mos mot mra mrb mri mrm mrn mro mrr mrs mrt msa msb msi msm msn mso msr mss mst mta mtb mti mtm mtn mto mtr mts mtt n-i naa nab nai nam nan nao nar nas nat nba nbb nbi nbm nbn nbo nbr nbs nbt nia nib nii nim nin nio nir nis nit nma nmb nmi nmm nmn nmo nmr nms nmt nna nnb nni nnm nnn nno nns nnt no- noa nob noi nom non noo nor nos not nra nrb nri nrm nrn nro nrr nrs nrt nsa nsb nsi nsm nsn nso nsr nss nst nta ntb nti ntm ntn nto ntr nts ntt o-i oaa oab oai oam oan oao oar oas oat ob- oba obb obi obm obn obo obr obs obt oia oib oii oim oin oio oir ois oit om- oma omb omi omm omn omo omr oms omt on- ona onb oni onn ono onr ons ont oo- ooa oob ooi oom oon ooo oor oos oot or- ora orb ori orm orn oro orr ors ort os- osa osb osi osm osn oso osr oss ost ot- ota otb oti otm otn oto otr ots ott ra- raa rab rai ram ran rao rar ras rat rba rbb rbi rbm rbn rbo rbr rbs rbt ria rib rii rim rin rio rir ris rit rma rmb rmi rmm rmn rmo rmr rms rmt rna rnb rni rnm rnn rno rnr rns rnt roa rob roi rom ron roo ror ros rot rra rrb rri rrm rrn rrr rrs rrt rsa rsb rsi rsm rsn rso rsr rss rst rta rtb rti rtm rtn rto rtr rts rtt saa sab sai sam san sao sar sas sat sba sbb sbi sbm sbn sbo sbr sbs sbt sia sib sii sim sin sio sir sis sit sma smb smi smm smn smo smr sms smt sna snb sni snm snn sno snr sns snt soa sob soi som son soo sor sos sot sr- sra srb sri srm srn sro srr srs srt ss- ssa ssb ssi ssm ssn sso ssr sss sst sta stb sti stm stn sto str sts stt taa tab tai tam tan tao tar tas tat tba tbb tbi tbm tbn tbo tbr tbs tbt tia tib tii tim tin tio tir tis tit tma tmb tmi tmm tmn tmo tmr tms tmt tna tnb tni tnm tnn tno tnr tns tnt to- toa tob toi tom ton too tor tos tot tra trb tri trm trn tro trr trs trt tsa tsb tsi tsm tsn tso tsr tss tst tta ttb tti ttm ttn tto ttr tts ttt