ppds pphi pphs ppic ppid ppie ppih ppod ppos pppd pppo pppp ppps ppsh ppss psci psco psdc psdi psdp psds psec psei pshc pshs psid psip psis psoc psoi psos psph pspi pspp psps pssc psse psso s-ic s-ii s-os sccc scce sccp sccs scdc scdp scds scec scee scep sch- sche schh schi scho schs sci- scic scid scie scio scip scis scoh scoo scop scpe scpi scpo scps scsc scsd scsh scsi scso sdcc sdch sdco sddc sdds sdep sdes sdhd sdhs sdic sdio sdps sdsc sdss se-c se-d se-e se-h se-i se-o se-s sec- secc secd sece sech seco secs sede sedo seds seec seed seeh seep sees sehe sehs seid seie seih seii seip seis seoc seod seoi seop sepd sepe sepi sepo sepp seps sesc sese sesh sesi seso sess shcc shcp she- shed shee sheh sheo shep shes shhh shhs shid shie shih shii shio ship shis shod shoe shoo shop shos shps shsc sicc sice sich sici sico sicp sics sidd side sidh sidi sido sids siec sied sies sihi sihs siod sioe siop sios sipc sipe sipi sipo sipp sips sisc sisd sise sish sisi siss soce soch soci soco socs sodd sode sodo sods soec soeo soep soes sohh soho sohp sohs soic soie sois sood soop soos sopd sope soph sopi sopo sopp sops sose sosh sosi soso soss spcc spco spcs spdc spde spdp spec sped spee spes sphs spic spie spio spip spis spoc spod spoo spop spos sppd spps spsd spse spso spsp spss sscc ssce ssci sscp sscs ssdc ssdd ssdp ssec ssee ssep sses sshs ssid ssis ssoc ssop sspc sspe sspo ssps sssc sssh sssi ssss