cccc cccl cccp cccs cclc ccls ccoc ccpl ccpp ccps ccsl ccsp ccss cloo clop clos clpp clsc coco cocp col- coll colo colp cols cool coop coos copo copp cops cosc cosl coso cosp coss cpcs cplc cpls cpos cpps cpsc cpsl cpso cscc cscl csco cscs cslp csos cspc csps lccc lccs lcls lcpc lcpl lcps lcsc lcsp llcc llcs lllc llll lloc lloo llps locc loco locs loll lolo lols looc lool loop loos lopp lops losc loso losp loss lppl lpsc lpss lsco lscs lspl lsso lssp occc oclc ocos ocpp olcc ollo olos olpc oolo oooo ooos oops opls opo- opos oppo opps oscc oscl osco oslo osoo osos osso pccc pccl pccs pcll pclo pcos pcpp pcps pcso plcc ploc ploo plop plos plpp plss poco pocs poll polo pols pool poop poos pop- popc popo popp pops poso poss ppcc ppcs pplo ppos pppo pppp ppps ppss psco psoc psol psos pspp psps pssc psso s-os sccc sccl sccp sccs scl- sclc scls scol scoo scop scpl scpo scps scsc scsl scso slcc sllp sloc sloo slop slos slpp slps slsc socl soco socs soll solo solp sols sool soop soos sopo sopp sops soso soss spcc spco spcs splc splo splp spls spoc spoo spop spos spps spso spsp spss sscc sscp sscs sslc sslp ssoc ssop sspc sspl sspo ssps sssc ssss