a-a a-i a-t aaa aaf aai aap aar aas aat af- afa aff afi afp afr afs aft ai- aia aif aii aip air ais ait ap- apa apf api app apr aps apt ar- ara arf ari arp arr ars art as- asa asf asi asp asr ass ast at- ata atf ati atp atr ats att faa faf fai fap far fas fat ffa fff ffi ffp ffr ffs fft fia fif fii fip fir fis fit fpa fpi fpp fpr fps fpt fra frf fri frp frr frs frt fsa fsf fsi fsp fsr fss fst fta ftf fti ftp ftr fts ftt i-f ia- iaa iaf iai iap iar ias iat ifa iff ifi ifp ifr ifs ift iia iif iii iip iir iis iit ipa ipf ipi ipp ipr ips ipt ir- ira irf iri irp irr irs irt is- isa isf isi isp isr iss ist ita itf iti itp its itt p-p paa paf pai pap par pas pat pfa pff pfi pfp pfr pfs pft pia pif pii pip pir pis pit ppa ppf ppi ppp ppr pps ppt pra prf pri prp prr prs prt ps- psa psf psi psp psr pss pst pt- pta ptf pti ptp ptr pts ptt ra- raa raf rai rap rar ras rat rfa rff rfi rfp rfr rfs rft ria rif rii rip rir ris rit rpa rpf rpi rpp rpr rps rpt rra rrf rri rrp rrr rrs rrt rsa rsf rsi rsp rsr rss rst rta rtf rti rtp rtr rts rtt saa saf sai sap sar sas sat sfa sff sfi sfp sfr sfs sft sia sif sii sip sir sis sit spa spf spi spp spr sps spt sr- sra srf sri srp srr srs srt ss- ssa ssf ssi ssp ssr sss sst sta stf sti stp str sts stt taa taf tai tap tar tas tat tfa tff tfi tfp tfr tfs tft tia tif tii tip tir tis tit tpa tpf tpi tpp tpr tps tpt tra trf tri trp trr trs trt tsa tsf tsi tsp tsr tss tst tta ttf tti ttp ttr tts ttt