a-a a-c a-t aaa aac aaf aam aao aar aat aax ac- aca acc acf acm aco acr act acx af- afa afc aff afm afo afr aft afx ama amc amf amm amo amr amt amx aoa aoc aof aom aoo aor aot aox ar- ara arc arf arm aro arr art arx at- ata atc atf atm ato atr att atx ax- axa axm axo axr axt axx c-- caa cac caf cam cao car cat cax cca ccc ccf ccm cco ccr cct ccx cfa cfc cff cfm cfo cfr cft cfx cma cmc cmf cmm cmo cmr cmt cmx co- coa coc cof com coo cor cot cox cra crc crf crm cro crr crt crx cta ctc ctf ctm cto ctr ctt ctx cxc cxf cxo cxr cxt cxx faa fac faf fam fao far fat fax fca fcc fcf fcm fco fcr fct fcx ffa ffc fff ffm ffo ffr fft ffx fma fmc fmf fmm fmo fmr fmt fmx foa foc fof fom foo for fot fox fra frc frf frm fro frr frt fta ftc ftf ftm fto ftr ftt ftx fxm fxr fxt fxx m-f m-o m-r maa mac maf mam mao mar mat max mc- mca mcc mcf mcm mco mcr mct mcx mfa mfc mff mfm mfo mfr mft mma mmc mmf mmm mmo mmr mmt mmx moa moc mof mom moo mor mot mox mra mrc mrf mrm mro mrr mrt mrx mta mtc mtf mtm mto mtr mtt mtx mxa mxc mxr oaa oac oaf oam oao oar oat oax oc- oca occ ocf ocm oco ocr oct ocx of- ofa ofc off ofm ofo ofr oft ofx om- oma omc omf omm omo omr omt omx oo- ooa ooc oof oom ooo oor oot oox or- ora orc orf orm oro orr ort orx ot- ota otc otf otm oto otr ott ox- oxa oxc oxf oxo oxt oxx ra- raa rac raf ram rao rar rat rax rca rcc rcf rcm rco rcr rct rcx rfa rfc rff rfm rfo rfr rft rma rmc rmf rmm rmo rmr rmt rmx roa roc rof rom roo ror rot rox rra rrc rrf rrm rrr rrt rta rtc rtf rtm rto rtr rtt rtx rxr t-x taa tac taf tam tao tar tat tax tca tcc tcf tcm tco tcr tct tcx tfa tfc tff tfm tfo tfr tft tfx tma tmc tmf tmm tmo tmr tmt tmx to- toa toc tof tom too tor tot tox tra trc trf trm tro trr trt trx tta ttc ttf ttm tto ttr ttt ttx txf txt xaa xac xaf xam xar xat xcf xcr xcx xfa xfm xft xfx xma xmc xmf xmm xmo xmr xmt xmx xoa xoc xof xom xoo xor xot xox xrc xrf xrt xrx xtc xtf xtm xtr xtx xxo xxx