osek osel oser oses oslo osoo osor osos osro ossb osse osso rbbb rbbr rbbs rbcl rble rbsl rbss rcbc rcbo rccb rccc rccs rcle rcls rcos rcsc rcsl rcss rebb rebe rebk rebo rebs recc rece reck recr recs reeb reek reel rees reke reko reks relb rele rell relo rels reol reos rere rero rers rese reso ress rkos rkss rlcs rlee rlls rob- robb robe robo robs rocc roce rock roco rocs roel roer roes roke rokk roko rokr roks role rolk roll rolo roob rook rool roor roos rorc rore rork roro rosc rose roso ross rrle rrrr rscc rscs rsee rslc rsos rsre rssl s-os sbbs sbcc sbcs sber sbor sbrk sbse sccc scce sccl sccs scec scee scel scer sck- sckl scl- sclc sclk scls scob scok scol scoo scor scr- scrc scre scrs scsc scsl scso scsr se-c se-e se-k se-o se-s sebe sebo sebs sec- secc sece seck seco secr secs seeb seec seek seel seer sees seke sekk seko selb sele selk sell selo sels seoc seok seol serb serc sere serk sero serr sers sesc sese seso sess skee skel skeo sker skes skoe skol skor skss slcc sleb slee sler sles slob sloc sloe sloo slos slrc slre slrs slsc sobe sobo sobr sobs soce sock socl soco socr socs soec soel soeo soes soke sokk soko sole solk soll solo solr sols sook sool soor soos sorb sore soro sorr sors sose soso soss srbc srcc sreb srec sreo sres sros ssbr sscc ssce sscs ssec ssee sses sslc ssle ssoc ssrc ssrl ssrs sssb sssc ssss