a-a a-t aaa aaf aam aao aap aar aas aat af- afa aff afm afo afp afr afs aft ama amf amm amo amp amr ams amt aoa aof aom aoo aop aor aos aot ap- apa apf apm apo app apr aps apt ar- ara arf arm aro arp arr ars art as- asa asf asm aso asp asr ass ast at- ata atf atm ato atp atr ats att faa faf fam fao fap far fas fat ffa fff ffm ffo ffp ffr ffs fft fma fmf fmm fmo fmp fmr fms fmt foa fof fom foo fop for fos fot fpa fpm fpo fpp fpr fps fpt fra frf frm fro frp frr frs frt fsa fsf fsm fso fsp fsr fss fst fta ftf ftm fto ftp ftr fts ftt m-f m-o m-r maa maf mam mao map mar mas mat mfa mff mfm mfo mfp mfr mfs mft mma mmf mmm mmo mmp mmr mms mmt moa mof mom moo mop mor mos mot mpa mpf mpm mpo mpp mpr mps mpt mra mrf mrm mro mrp mrr mrs mrt msa msf msm mso msp msr mss mst mta mtf mtm mto mtp mtr mts mtt oaa oaf oam oao oap oar oas oat of- ofa off ofm ofo ofp ofr ofs oft om- oma omf omm omo omp omr oms omt oo- ooa oof oom ooo oop oor oos oot op- opa opf opm opo opp opr ops opt or- ora orf orm oro orp orr ors ort os- osa osf osm oso osp osr oss ost ot- ota otf otm oto otp otr ots ott p-p paa paf pam pao pap par pas pat pfa pff pfm pfo pfp pfr pfs pft pma pmf pmm pmo pmp pmr pms pmt poa pof pom poo pop por pos pot ppa ppf ppm ppo ppp ppr pps ppt pra prf prm pro prp prr prs prt ps- psa psf psm pso psp psr pss pst pt- pta ptf ptm pto ptp ptr pts ptt ra- raa raf ram rao rap rar ras rat rfa rff rfm rfo rfp rfr rfs rft rma rmf rmm rmo rmp rmr rms rmt roa rof rom roo rop ror ros rot rpa rpf rpm rpo rpp rpr rps rpt rra rrf rrm rrp rrr rrs rrt rsa rsf rsm rso rsp rsr rss rst rta rtf rtm rto rtp rtr rts rtt saa saf sam sao sap sar sas sat sfa sff sfm sfo sfp sfr sfs sft sma smf smm smo smp smr sms smt soa sof som soo sop sor sos sot spa spf spm spo spp spr sps spt sr- sra srf srm sro srp srr srs srt ss- ssa ssf ssm sso ssp ssr sss sst sta stf stm sto stp str sts stt taa taf tam tao tap tar tas tat tfa tff tfm tfo tfp tfr tfs tft tma tmf tmm tmo tmp tmr tms tmt to- toa tof tom too top tor tos tot tpa tpf tpm tpo tpp tpr tps tpt tra trf trm tro trp trr trs trt tsa tsf tsm tso tsp tsr tss tst tta ttf ttm tto ttp ttr tts ttt