a-a a-c a-t aaa aac aaf aam aao aas aat ac- aca acc acf acm aco acs act af- afa afc aff afm afo afs aft ama amc amf amm amo ams amt aoa aoc aof aom aoo aos aot as- asa asc asf asm aso ass ast at- ata atc atf atm ato ats att c-- caa cac caf cam cao cas cat cca ccc ccf ccm cco ccs cct cfa cfc cff cfm cfo cfs cft cma cmc cmf cmm cmo cms cmt co- coa coc cof com coo cos cot csa csc csf csm cso css cst cta ctc ctf ctm cto cts ctt faa fac faf fam fao fas fat fca fcc fcf fcm fco fcs fct ffa ffc fff ffm ffo ffs fft fma fmc fmf fmm fmo fms fmt foa foc fof fom foo fos fot fsa fsc fsf fsm fso fss fst fta ftc ftf ftm fto fts ftt m-f m-o maa mac maf mam mao mas mat mc- mca mcc mcf mcm mco mcs mct mfa mfc mff mfm mfo mfs mft mma mmc mmf mmm mmo mms mmt moa moc mof mom moo mos mot msa msc msf msm mso mss mst mta mtc mtf mtm mto mts mtt oaa oac oaf oam oao oas oat oc- oca occ ocf ocm oco ocs oct of- ofa ofc off ofm ofo ofs oft om- oma omc omf omm omo oms omt oo- ooa ooc oof oom ooo oos oot os- osa osc osf osm oso oss ost ot- ota otc otf otm oto ots ott saa sac saf sam sao sas sat sca scc scf scm sco scs sct sfa sfc sff sfm sfo sfs sft sma smc smf smm smo sms smt soa soc sof som soo sos sot ss- ssa ssc ssf ssm sso sss sst sta stc stf stm sto sts stt taa tac taf tam tao tas tat tca tcc tcf tcm tco tcs tct tfa tfc tff tfm tfo tfs tft tma tmc tmf tmm tmo tms tmt to- toa toc tof tom too tos tot tsa tsc tsf tsm tso tss tst tta ttc ttf ttm tto tts ttt