psdr psds pseb pseg psei psgi psgr psid psip psis psni psnr pspi pspp pspr psps psrd psrp psse rbbb rbbr rbbs rbds rbis rbsd rbsp rbss rdbp rder rdgs rebb rebe rebs redd rede redi redr reds reeb reed reen reep rees regd rege regi regn regr regs reid reii rein reir reis rend rene reng reni renn rens repe repi repp repr reps rerd rere rerg reri rers rese resi resn resp ress rgbe rgbi rgds rib- ribe ribs ridd ride ridi rids ried rien riep rier ries rige rigg rigi rigs riin riis rind rine ring rinn ripd ripe ripi ripp ripr rips rire riri rirs risd rise risi risp riss rnbr rndp rnds rngs rnie rnin rnsp rpdp rpgs rpii rppn rpps rred rrrr rrsp rsbi rsdd rsdg rsds rsee rsgb rsid rsis rsnn rsnr rspb rsps rsre s-ib s-ii sbbs sbds sber sbig sbsd sbse sbsi sbsp sdds sdep sder sdes sdge sdgs sdib sdpr sdps sdrs sdss se-d se-e se-g se-i se-n se-s sebe sebi sebs sede seds seeb seed seeg seen seep seer sees sege segg segi segs seid seie seii sein seip seir seis send sene seng seni senn senr sens sepd sepe sepg sepi sepn sepp sepr seps serb serd sere serg seri sern serp serr sers sese sesi sess sger sges sggg sggs sgps sgsd sgss sibe sibi sibs sidd side sidi sidr sids sied sieg sien sier sies sigd sige sigg sigi sign sigs sind sine sing sini sinn sinp sins sipe sipi sipp sips sire siri sirp sirr sirs sisd sise sisi siss sneb sned snee sneg snep sner snes snib snid snie snig snip snir snns snpg snpp snrs snsd spde spdp spdr speb sped spee speg spen sper spes spgb spib spie spig spin spip spir spis spne spns sppd spps sprd spri sprs spsd spse spsp spss srde sreb sres srgb srib sris srni srnn srps srsd srsp ssbn ssbr ssdd ssdp ssee ssep sses ssgs ssid ssin ssis ssns sspe ssps ssrg ssri ssrs sssb sssi ssss