a-a a-b a-i a-t aaa aab aaf aai aak aam aar aat ab- aba abb abf abi abk abm abr abt af- afa afb aff afi afk afm afr aft ai- aia aib aif aii aik aim air ait aka akb aki akk akm akr ama amb amf ami amk amm amr amt ar- ara arb arf ari ark arm arr art at- ata atb atf ati atm atr att baa bab baf bai bak bam bar bat bba bbb bbf bbi bbk bbm bbr bbt bfa bfb bff bfi bfm bfr bft bi- bia bib bif bii bik bim bir bit bka bkb bkf bkk bkm bkr bkt bma bmb bmf bmi bmk bmm bmr bmt bra brb brf bri brk brm brr brt bta btb btf bti btk btm btr btt faa fab faf fai fak fam far fat fba fbb fbf fbi fbk fbm fbr fbt ffa fff ffi ffk ffm ffr fft fia fib fif fii fik fim fir fit fka fkb fkf fki fkk fkm fkt fma fmb fmf fmi fmm fmr fmt fra frb frf fri frk frm frr frt fta ftb ftf fti ftk ftm ftr ftt i-f ia- iaa iab iaf iai iam iar iat iba ibb ibf ibi ibk ibm ibr ibt ifa ifb iff ifi ifm ifr ift iia iib iif iii iim iir iit ika ikb ikf iki ikk ikr ikt im- ima imb imf imi imm imt ir- ira irb irf iri irk irm irr irt ita itb itf iti itk itm itt k-t ka- kaa kab kaf kai kak kam kar kat kba kbb kbf kbi kbk kbm kbr kfa kff kfi kfm kia kib kif kii kik kim kir kit kkb kki kkk kkm kkr kkt kma kmb kmf kmi kmk kmm kmt kra krf kri krk krr krt kta ktb ktf ktk ktm ktr ktt m-f m-r maa mab maf mai mak mam mar mat mba mbb mbf mbi mbk mbm mbr mbt mfa mfb mff mfi mfm mfr mft mi- mia mib mif mii mik mim mir mit mka mkb mkk mkm mkr mkt mma mmb mmf mmi mmk mmm mmr mmt mra mrb mrf mri mrk mrm mrr mrt mta mtb mtf mti mtk mtm mtr mtt ra- raa rab raf rai rak ram rar rat rba rbb rbf rbi rbk rbm rbr rbt rfa rfb rff rfi rfk rfm rfr rft ria rib rif rii rik rim rir rit rkb rkf rkk rkm rkt rma rmb rmf rmi rmm rmr rmt rra rrb rrf rri rrk rrm rrr rrt rta rtb rtf rti rtk rtm rtr rtt taa tab taf tai tak tam tar tat tba tbb tbf tbi tbk tbm tbr tbt tfa tfb tff tfi tfk tfm tfr tft tia tib tif tii tik tim tir tit tka tkb tkk tkm tkr tkt tma tmb tmf tmi tmk tmm tmr tmt tra trb trf tri trk trm trr trt tta ttb ttf tti ttk ttm ttr ttt