rijo rijs rios rire riri rirs risc rise rish risi riso riss rocc roce roch roco rocs roer roes rofc rofe roff rofo rohe rohr rohs roif roio roir rois roje roji rojo rojs roof rooi roor roos rorc rore rori roro rosc rose rosh rosi roso ross rrfc rrhs rrif rrrr rscc rsch rscs rsee rsfc rshs rsis rsos rsre s-ic s-ii s-os sccc scce sccs scec scee scer scfc scfe scfi sch- sche schh schi scho schr schs sci- scic scie scif scio scir scis scoh scoo scor scr- scrc scre scri scrs scsc scsh scsi scso scsr se-c se-e se-f se-h se-i se-o se-s sec- secc sece sech seco secr secs seec seef seeh seer sees seff sefi sehe sehr sehs seie seif seih seii seir seis sejo seoc seoi serc sere serf seri serj sero serr sers sesc sese sesh sesi seso sess sfcc sfco sfcs sfer sffc sfhs sfij sfio sfor sfos sfrc sfro sfss shcc she- shee shef sheh sheo sher shes shhh shhs shie shih shii shio shir shis shoe shof shoo shor shos shre shri shrs shsc sicc sice sich sici sico sics siec sief sier sies sife siff sifo sifr sihi sihr sihs sijo sioe sior sios sirc sire sirf siri siro sirr sirs sisc sise sish sisi siss sjcc sjcs sjhs sjis sjoe soce soch soci soco socr socs soec soeo soes sofi sofo sohh soho sohs soic soie soif soir sois soje soji soof soor soos sore sorh sori soro sorr sors sose sosh sosi soso soss srcc srch srec sreo sres srfc srfi srhs sris sros sscc ssce ssci sscs ssec ssee sses ssfc sshs ssis ssoc ssrc ssri ssrs sssc sssf sssh sssi ssss