c-cd cccc cccp cccs ccdc ccdp ccds ccoc ccod ccpp ccps ccsd ccsp ccss cdcs cdos cdps cdss coco cocp codd cods cood coop coos copd copo copp cops cosc coso cosp coss cpcs cpos cppd cpps cpsc cpso cscc cscd csco cscs csdp csos cspc cspd csps cssd dccc dccp dccs dcds dcop dcos dcpo dcps dcsc dcss dddd ddoc ddpo ddps ddss doco docs dod- dodd dodo dods dood doop doos dopo dopp dops doso doss dpcp dpos dppc dpsd dscc dscp dscs dsdp dsos dsps dssc dssp occc ocds ocos ocpd ocpp oddd odds odoo odop odos odso oooo ooos oops opds opo- opos oppo opps oscc osco osoo osos ossd osso pccc pccs pcod pcos pcpp pcps pcso pdcp pdoc pdos pdsd pdss pocd poco pocs pod- podd podo pods pood poop poos pop- popc popo popp pops poso poss ppcc ppcd ppcs ppds ppod ppos pppd pppo pppp ppps ppss psco psdc psdp psds psoc psos pspp psps pssc psso s-os sccc sccp sccs scdc scdp scds scoo scop scpo scps scsc scsd scso sdcc sdco sddc sdds sdps sdsc sdss soco socs sodd sodo sods sood soop soos sopd sopo sopp sops soso soss spcc spco spcs spdc spdp spoc spod spoo spop spos sppd spps spsd spso spsp spss sscc sscp sscs ssdc ssdd ssdp ssoc ssop sspc sspo ssps sssc ssss