pree pren prep pres pri- prid prie prii prin pris prnd prnp prpd prps prrd prri prrs prsc prsd prse prsi prss psci psdc psdi psdp psdr psds psec psei psid psip psis psnc psni psnr pspi pspp pspr psps psrd psrp pssc psse rccc rccs rcdc rcde rcds rcep rcic rcid rcis rcnr rcpd rcpi rcps rcrd rcsc rcsd rcsi rcss rder rdpc recc recd rece reci recp recr recs redc redd rede redi redr reds reed reen reep rees reid reii rein reir reis rend rene reni renn rens repe repi repp repr reps rerd rere reri rers rese resi resn resp ress ricc rice rics ridc ridd ride ridi rids ried rien riep rier ries riin riis rind rine rinn ripd ripe ripi ripp ripr rips rire riri rirs risc risd rise risi risp riss rncp rncs rndc rndp rnds rnie rnin rnsp rpcs rpdp rpii rppn rpps rred rrrr rrsp rscc rscn rscs rsdd rsds rsee rsid rsis rsnn rsnr rsps rsre s-ic s-ii sccc scce sccp sccs scdc scdp scds scec scee scep scer sci- scic scid scie scin scip scir scis scnd scnr scpe scpi scps scr- scrc scre scri scrn scrs scsc scsd scsi scsn scsr sdcc sddc sdds sdep sder sdes sdic sdpr sdps sdrc sdrs sdsc sdss se-c se-d se-e se-i se-n se-s sec- secc secd sece secn secr secs sede seds seec seed seen seep seer sees seid seie seii sein seip seir seis send sene seni senn senr sens sepd sepe sepi sepn sepp sepr seps serc serd sere seri sern serp serr sers sesc sese sesi sess sicc sice sici sicp sics sidd side sidi sidr sids siec sied sien sier sies sind sine sini sinn sinp sins sipc sipe sipi sipp sips sirc sire siri sirp sirr sirs sisc sisd sise sisi siss sncc sncp sned snee snep sner snes snid snie snip snir snns snpp snrs snsd spcc spcs spdc spde spdp spdr spec sped spee spen sper spes spic spie spin spip spir spis spne spns sppd spps sprd spri sprs spsd spse spsp spss srcc srde srec sres sris srni srnn srpc srps srsd srsp sscc ssce ssci sscp sscs ssdc ssdd ssdp ssec ssee ssep sses ssid ssin ssis ssns sspc sspe ssps ssrc ssri ssrs sssc sssi ssss