a-a a-b a-i a-t aaa aab aaf aai aam aan aao aar aat ab- aba abb abf abi abm abn abo abr abt af- afa afb aff afi afm afn afo afr aft ai- aia aib aif aii aim ain aio air ait ama amb amf ami amm amn amo amr amt an- ana anb anf ani anm ann ano anr ant aoa aob aof aoi aom aon aoo aor aot ar- ara arb arf ari arm arn aro arr art at- ata atb atf ati atm atn ato atr att baa bab baf bai bam ban bao bar bat bba bbb bbf bbi bbm bbn bbo bbr bbt bfa bfb bff bfi bfm bfn bfo bfr bft bi- bia bib bif bii bim bin bio bir bit bma bmb bmf bmi bmm bmn bmo bmr bmt bna bnb bnf bni bnn bno bnr bnt boa bob bof boi bom bon boo bor bot bra brb brf bri brm brn bro brr brt bta btb btf bti btm btn bto btr btt faa fab faf fai fam fan fao far fat fba fbb fbf fbi fbm fbn fbo fbr fbt ffa fff ffi ffm ffn ffo ffr fft fia fib fif fii fim fin fir fit fma fmb fmf fmi fmm fmn fmo fmr fmt fna fnb fnf fni fnm fnn fnr fnt foa fob fof foi fom fon foo for fot fra frb frf fri frm frn fro frr frt fta ftb ftf fti ftm ftn fto ftr ftt i-f ia- iaa iab iaf iai iam ian iao iar iat iba ibb ibf ibi ibm ibn ibo ibr ibt ifa ifb iff ifi ifm ifn ifo ifr ift iia iib iif iii iim iin iio iir iit im- ima imb imf imi imm imn imo imt in- ina inb inf ini inm inn ino inr int io- ioa iob iof ioi iom ion ioo ior iot ir- ira irb irf iri irm irn iro irr irt ita itb itf iti itm itn ito itt m-f m-o m-r maa mab maf mai mam man mao mar mat mba mbb mbf mbi mbm mbo mbr mbt mfa mfb mff mfi mfm mfn mfo mfr mft mi- mia mib mif mii mim min mio mir mit mma mmb mmf mmi mmm mmn mmo mmr mmt mna mnb mnf mni mnm mnn mno mnr mnt moa mob mof moi mom mon moo mor mot mra mrb mrf mri mrm mrn mro mrr mrt mta mtb mtf mti mtm mtn mto mtr mtt n-i naa nab naf nai nam nan nao nar nat nba nbb nbf nbi nbm nbn nbo nbr nbt nfa nfb nff nfi nfn nfo nfr nft nia nib nif nii nim nin nio nir nit nma nmb nmi nmm nmn nmo nmr nmt nna nnb nnf nni nnm nnn nno nnt no- noa nob nof noi nom non noo nor not nra nrb nrf nri nrm nrn nro nrr nrt nta ntb ntf nti ntm ntn nto ntr ntt o-i oaa oab oaf oai oam oan oao oar oat ob- oba obb obf obi obm obn obo obr obt of- ofa ofb off ofi ofm ofn ofo ofr oft oia oib oif oii oim oin oio oir oit om- oma omb omf omi omm omn omo omr omt on- ona onb onf oni onn ono onr ont oo- ooa oob oof ooi oom oon ooo oor oot or- ora orb orf ori orm orn oro orr ort ot- ota otb otf oti otm otn oto otr ott ra- raa rab raf rai ram ran rao rar rat rba rbb rbf rbi rbm rbn rbo rbr rbt rfa rfb rff rfi rfm rfn rfo rfr rft ria rib rif rii rim rin rio rir rit rma rmb rmf rmi rmm rmn rmo rmr rmt rna rnb rni rnm rnn rno rnr rnt roa rob rof roi rom ron roo ror rot rra rrb rrf rri rrm rrn rrr rrt rta rtb rtf rti rtm rtn rto rtr rtt taa tab taf tai tam tan tao tar tat tba tbb tbf tbi tbm tbn tbo tbr tbt tfa tfb tff tfi tfm tfn tfo tfr tft tia tib tif tii tim tin tio tir tit tma tmb tmf tmi tmm tmn tmo tmr tmt tna tnb tnf tni tnm tnn tno tnr tnt to- toa tob tof toi tom ton too tor tot tra trb trf tri trm trn tro trr trt tta ttb ttf tti ttm ttn tto ttr ttt