a-a a-b a-i a-t aaa aab aaf aai aam aan aao aar aas aat ab- aba abb abf abi abm abn abo abr abs abt af- afa afb aff afi afm afn afo afr afs aft ai- aia aib aif aii aim ain aio air ais ait ama amb amf ami amm amn amo amr ams amt an- ana anb anf ani anm ann ano anr ans ant aoa aob aof aoi aom aon aoo aor aos aot ar- ara arb arf ari arm arn aro arr ars art as- asa asb asf asi asm asn aso asr ass ast at- ata atb atf ati atm atn ato atr ats att baa bab baf bai bam ban bao bar bas bat bba bbb bbf bbi bbm bbn bbo bbr bbs bbt bfa bfb bff bfi bfm bfn bfo bfr bfs bft bi- bia bib bif bii bim bin bio bir bis bit bma bmb bmf bmi bmm bmn bmo bmr bms bmt bna bnb bnf bni bnn bno bnr bns bnt boa bob bof boi bom bon boo bor bos bot bra brb brf bri brm brn bro brr brs brt bsa bsb bsf bsi bsm bsn bso bsr bss bst bta btb btf bti btm btn bto btr bts btt faa fab faf fai fam fan fao far fas fat fba fbb fbf fbi fbm fbn fbo fbr fbs fbt ffa fff ffi ffm ffn ffo ffr ffs fft fia fib fif fii fim fin fir fis fit fma fmb fmf fmi fmm fmn fmo fmr fms fmt fna fnb fnf fni fnm fnn fnr fns fnt foa fob fof foi fom fon foo for fos fot fra frb frf fri frm frn fro frr frs frt fsa fsb fsf fsi fsm fsn fso fsr fss fst fta ftb ftf fti ftm ftn fto ftr fts ftt i-f ia- iaa iab iaf iai iam ian iao iar ias iat iba ibb ibf ibi ibm ibn ibo ibr ibs ibt ifa ifb iff ifi ifm ifn ifo ifr ifs ift iia iib iif iii iim iin iio iir iis iit im- ima imb imf imi imm imn imo ims imt in- ina inb inf ini inm inn ino inr ins int io- ioa iob iof ioi iom ion ioo ior ios iot ir- ira irb irf iri irm irn iro irr irs irt is- isa isb isf isi ism isn iso isr iss ist ita itb itf iti itm itn ito its itt m-f m-o m-r maa mab maf mai mam man mao mar mas mat mba mbb mbf mbi mbm mbo mbr mbs mbt mfa mfb mff mfi mfm mfn mfo mfr mfs mft mi- mia mib mif mii mim min mio mir mis mit mma mmb mmf mmi mmm mmn mmo mmr mms mmt mna mnb mnf mni mnm mnn mno mnr mns mnt moa mob mof moi mom mon moo mor mos mot mra mrb mrf mri mrm mrn mro mrr mrs mrt msa msb msf msi msm msn mso msr mss mst mta mtb mtf mti mtm mtn mto mtr mts mtt n-i naa nab naf nai nam nan nao nar nas nat nba nbb nbf nbi nbm nbn nbo nbr nbs nbt nfa nfb nff nfi nfn nfo nfr nfs nft nia nib nif nii nim nin nio nir nis nit nma nmb nmi nmm nmn nmo nmr nms nmt nna nnb nnf nni nnm nnn nno nns nnt no- noa nob nof noi nom non noo nor nos not nra nrb nrf nri nrm nrn nro nrr nrs nrt nsa nsb nsf nsi nsm nsn nso nsr nss nst nta ntb ntf nti ntm ntn nto ntr nts ntt o-i oaa oab oaf oai oam oan oao oar oas oat ob- oba obb obf obi obm obn obo obr obs obt of- ofa ofb off ofi ofm ofn ofo ofr ofs oft oia oib oif oii oim oin oio oir ois oit om- oma omb omf omi omm omn omo omr oms omt on- ona onb onf oni onn ono onr ons ont oo- ooa oob oof ooi oom oon ooo oor oos oot or- ora orb orf ori orm orn oro orr ors ort os- osa osb osf osi osm osn oso osr oss ost ot- ota otb otf oti otm otn oto otr ots ott ra- raa rab raf rai ram ran rao rar ras rat rba rbb rbf rbi rbm rbn rbo rbr rbs rbt rfa rfb rff rfi rfm rfn rfo rfr rfs rft ria rib rif rii rim rin rio rir ris rit rma rmb rmf rmi rmm rmn rmo rmr rms rmt rna rnb rni rnm rnn rno rnr rns rnt roa rob rof roi rom ron roo ror ros rot rra rrb rrf rri rrm rrn rrr rrs rrt rsa rsb rsf rsi rsm rsn rso rsr rss rst rta rtb rtf rti rtm rtn rto rtr rts rtt saa sab saf sai sam san sao sar sas sat sba sbb sbf sbi sbm sbn sbo sbr sbs sbt sfa sfb sff sfi sfm sfn sfo sfr sfs sft sia sib sif sii sim sin sio sir sis sit sma smb smf smi smm smn smo smr sms smt sna snb snf sni snm snn sno snr sns snt soa sob sof soi som son soo sor sos sot sr- sra srb srf sri srm srn sro srr srs srt ss- ssa ssb ssf ssi ssm ssn sso ssr sss sst sta stb stf sti stm stn sto str sts stt taa tab taf tai tam tan tao tar tas tat tba tbb tbf tbi tbm tbn tbo tbr tbs tbt tfa tfb tff tfi tfm tfn tfo tfr tfs tft tia tib tif tii tim tin tio tir tis tit tma tmb tmf tmi tmm tmn tmo tmr tms tmt tna tnb tnf tni tnm tnn tno tnr tns tnt to- toa tob tof toi tom ton too tor tos tot tra trb trf tri trm