rosp ross rpgs rpii rpms rpof rpon rpos rppn rpps rrif rrmp rrrr rrsp rsis rsmg rsnn rsno rsnr rsos rspo rsps s-ii s-os sfgp sfio sfmm sfog sfor sfos sfro sfss sggg sggs sgio sgps sgro sgsm sgss siff sifo sifr sigg sigi sign sigo sigs siim simi simm simo simp sims sing sini sinn sino sinp sins sion siop sior sios sipi sipo sipp sips sirf siri siro sirp sirr sirs sisi siss smgs smif smig smin smis smof smog smon smos smps smrf smsn smsp smss snig snip snir snmp snns snog snom snoo snop snor snos snpg snpo snpp snrs sofi sofo sogi sogn sogo sogs soif soim soin soir sois somi somm somn somo son- song soni sono sons soof soog soom soon soop soor soos sopi sopo sopp sops sorg sori sorm sorn soro sorr sors sosi soso soss spfs spig spim spin spio spip spir spis spmi spms spns spon spoo spop spor spos sppf spps spri sprm spro sprs spso spsp spss srfi srim sris srni srnn srno sros srps srsp ssfp ssgs ssin ssis ssns ssop sspf sspo ssps ssrg ssri ssrm ssrs sssf sssi sssm ssss