cccc ccci cccp ccic ccii ccip ccoc ccpp cctc cctt cicc cici cico cict ciii ciit cipo cipp citi cito citp citt city coco cocp coct coip coit coop coot copi copo copp copt copy cotc coti coto cott coty coyo coyt cpic cpio cptp ctcp ctic ctot ctpo ctpp cyc- cycc cypc cyt- cyto cyy- cyyc iccc icci icco iccp icct icoc icpc icpo ictp iiii iiio iiit iioi iioo iiop iitt ioci iocp ioii ioio ioit iooi iooo ioto ipcc ipct ipop ippc ippo ippy iptc ipto itic itoi itoo itpc itto itty iypt occc occi occt ocpp oct- octi octo octy oici oiii oipc oitc oiti oooo ootp ooty opic opii opio opit opo- oppi oppo oppy opti opto otic otit oto- otoo otoy otpp otti otto pccc pcip pcpp picc pici pico pict picy piip piot pipi pipo pipp pipy piti pito pitt pity piyo poco poio poop poot pop- popc popi popo popp popt popy potc poti poto pott poty poyo ppcc ppci ppic pppo pppp pptt ptcc ptop pttc pyic pyo- pyot pypy pytt tccc tcpo tcpy tctc ticc tico tiit tiop tip- tipc tipi tipo tipp tipt titc titi tito titp titt tiyi tiyo to-y toci toco toit toot top- topi topo topp topt totc toti toto tott toty toyo toyt tpcp tppp tptp tpyo ttcp ttop ttoy tttt tyco typ- typo typp typy tyti tyto tytt tyty yccc yctc yiti yitp yoit yoop yoot yopo yopy yott yoyo ypcc yyyy