fff ffg ffi ffo ffp ffr ffs fft fgf fgg fgi fgp fgr fgs fgt fif fig fii fip fir fis fit fof fog foi foo fop for fos fot fpg fpi fpo fpp fpr fps fpt frf frg fri fro frp frr frs frt fsf fsg fsi fso fsp fsr fss fst ftf ftg fti fto ftp ftr fts ftt g-p gff gfi gfo gfp gfr gfs gft ggg ggi ggo ggp ggr ggs ggt gif gig gii gio gip gir gis git gof gog goi goo gop gor gos got gpf gpg gpi gpo gpp gpr gps gpt grf grg gri gro grp grr grs grt gsf gsg gsi gso gsp gsr gss gst gtf gtg gti gto gtp gtr gts gtt i-f iff ifg ifi ifo ifp ifr ifs ift igf igg igi igo igp igr igs igt iif iii iio iip iir iis iit io- iof iog ioi ioo iop ior ios iot ipf ipg ipi ipo ipp ipr ips ipt ir- irf irg iri iro irp irr irs irt is- isf isg isi iso isp isr iss ist itf itg iti ito itp its itt o-i of- off ofg ofi ofo ofp ofr ofs oft ogf ogg ogi ogo ogp ogs ogt oif oii oio oip oir ois oit oo- oof oog ooi ooo oop oor oos oot op- opf opg opi opo opp opr ops opt or- orf org ori oro orp orr ors ort os- osf osg osi oso osp osr oss ost ot- otf otg oti oto otp otr ots ott p-p pff pfg pfi pfo pfp pfr pfs pft pgf pgg pgi pgo pgp pgr pgs pgt pif pig pii pio pip pir pis pit pof pog poi poo pop por pos pot ppf ppg ppi ppo ppp ppr pps ppt prf prg pri pro prp prr prs prt ps- psf psg psi pso psp psr pss pst pt- ptf ptg pti pto ptp ptr pts ptt rff rfg rfi rfo rfp rfr rfs rft rgf rgg rgi rgo rgp rgr rgs rgt rif rig rii rio rip rir ris rit rof rog roi roo rop ror ros rot rpf rpg rpi rpo rpp rpr rps rpt rrf rrg rri rrp rrr rrs rrt rsf rsg rsi rso rsp rsr rss rst rtf rtg rti rto rtp rtr rts rtt sff sfg sfi sfo sfp sfr sfs sft sgf sgg sgi sgo sgp sgr sgs sgt sif sig sii sio sip sir sis sit sof sog soi soo sop sor sos sot spf spg spi spo spp spr sps spt sr- srf srg sri sro srp srr srs srt ss- ssf ssg ssi sso ssp ssr sss sst stf stg sti sto stp str sts stt tff tfg tfi tfo tfp tfr tfs tft tgf tgg tgi tgo tgp tgr tgs tgt tif tig tii tio tip tir tis tit to- tof tog toi too top tor tos tot tpf tpg tpi tpo tpp tpr tps tpt trf trg tri tro trp trr trs trt tsf tsg tsi tso tsp tsr tss tst ttf ttg tti tto ttp ttr tts ttt