rccs rcdc rcde rcds rcep rcos rcpd rcpo rcps rcrd rcsc rcsd rcss rder rdoc rdos rdpc rdso recc recd rece reck recp recr recs redc redd rede redo redr reds reed reek reep rees reke reko reks reod reop reos repe repo repp repr reps rerd rere rero rers rese reso resp ress rkos rkss rocc roce rock roco rocs rodd rode rodo rods roed roer roes roke rokk roko rokr roks rood rook roop roor roos rope ropo rops rorc rore rork roro rosc rose roso rosp ross rpcs rpdp rpoe rpos rpps rred rrrr rrsp rscc rscs rsdd rsds rsee rsos rspk rspo rsps rsre s-os sccc scce sccp sccs scdc scdp scds scec scee scep scer sck- scok scoo scop scor scpe scpo scps scr- scrc scre scrs scsc scsd scso scsr sdcc sdco sddc sdds sdep sder sdes sdpr sdps sdrc sdrs sdsc sdss se-c se-d se-e se-k se-o se-s sec- secc secd sece seck seco secr secs sede sedo seds seec seed seek seep seer sees seke sekk seko seoc seod seok seop sepd sepe sepo sepp sepr seps serc serd sere serk sero serp serr sers sesc sese seso sess sked skee skeo skep sker skes skoe skop skor skpc skpo sksd skss soce sock soco socr socs sodd sode sodo sods soec soeo soep soes soke sokk soko sood sook soop soor soos sopd sope sopo sopp sops sord sore soro sorr sors sose soso soss spcc spco spcs spdc spde spdp spdr spec sped spee spek sper spes spke spkr spoc spod spok spoo spop spor spos sppd spps sprd spro sprs spsd spse spso spsp spss srcc srde srec sreo sres sros srpc srps srsd srsp sscc ssce sscp sscs ssdc ssdd ssdp ssec ssee ssep sses ssoc ssop sspc sspe sspo ssps ssrc ssrs sssc ssss