fff ffh ffo ffr ffs ffu fhf fhh fho fhr fhs fof foh foo for fos fou frf frh fro frr frs fru fsf fsh fso fsr fss fsu fuf fuo fur fus fuu hff hfh hfo hfr hfs hfu hhf hhh hho hhr hhs hhu hof hoh hoo hor hos hou hr- hrf hrh hro hrr hrs hru hsf hsh hsr hss hsu huf huh huo hur hus huu of- off ofo ofr ofs ofu ohf ohh oho ohr ohs ohu oo- oof ooh ooo oor oos or- orf orh oro orr ors oru os- osf osh oso osr oss osu ou- ouf ouh ouo our ous rff rfh rfo rfr rfs rfu rh- rhf rhh rho rhr rhs rhu rof roh roo ror ros rou rrf rrh rrr rrs rru rsf rsh rso rsr rss rsu ruf ruh ruo rur rus ruu sff sfh sfo sfr sfs sfu sh- shf shh sho shr shs shu sof soh soo sor sos sou sr- srf srh sro srr srs ss- ssf ssh sso ssr sss ssu suf suh suo sur sus suu uff ufh ufo ufr ufs ufu uhf uhh uho uhr uhs uhu uoo uor uos ur- urf uro urr urs uru usf ush uso usr uss usu uur uus uuu