a-a a-t aaa aaf aam aao aar aas aat af- afa aff afm afo afr afs aft ama amf amm amo amr ams amt aoa aof aom aoo aor aos aot ar- ara arf arm aro arr ars art as- asa asf asm aso asr ass ast at- ata atf atm ato atr ats att faa faf fam fao far fas fat ffa fff ffm ffo ffr ffs fft fma fmf fmm fmo fmr fms fmt foa fof fom foo for fos fot fra frf frm fro frr frs frt fsa fsf fsm fso fsr fss fst fta ftf ftm fto ftr fts ftt m-f m-o m-r maa maf mam mao mar mas mat mfa mff mfm mfo mfr mfs mft mma mmf mmm mmo mmr mms mmt moa mof mom moo mor mos mot mra mrf mrm mro mrr mrs mrt msa msf msm mso msr mss mst mta mtf mtm mto mtr mts mtt oaa oaf oam oao oar oas oat of- ofa off ofm ofo ofr ofs oft om- oma omf omm omo omr oms omt oo- ooa oof oom ooo oor oos oot or- ora orf orm oro orr ors ort os- osa osf osm oso osr oss ost ot- ota otf otm oto otr ots ott ra- raa raf ram rao rar ras rat rfa rff rfm rfo rfr rfs rft rma rmf rmm rmo rmr rms rmt roa rof rom roo ror ros rot rra rrf rrm rrr rrs rrt rsa rsf rsm rso rsr rss rst rta rtf rtm rto rtr rts rtt saa saf sam sao sar sas sat sfa sff sfm sfo sfr sfs sft sma smf smm smo smr sms smt soa sof som soo sor sos sot sr- sra srf srm sro srr srs srt ss- ssa ssf ssm sso ssr sss sst sta stf stm sto str sts stt taa taf tam tao tar tas tat tfa tff tfm tfo tfr tfs tft tma tmf tmm tmo tmr tms tmt to- toa tof tom too tor tos tot tra trf trm tro trr trs trt tsa tsf tsm tso tsr tss tst tta ttf ttm tto ttr tts ttt