c-cor c-p-c c-pop ccccc cd-np cnnnn co-co co-np co-op cocc- cocco cocon codco codo codon conco concr condo condr cono- conon conop conor coord coppo copr- copro corno coro- corod coron corop croco crodo crood croon croop cropc cropo d-con d-rod dconn ddddd do-do dodon dodoo dodro dondo donon donor doodo doorn dorno doron dpond drood droon droop drop- dropo n-p-n ndpcp nnooo no-do no-no no-op nondo nonno nonop nonpc noord norcd norco nordo noroc noron norro ocorn oncdr onco- onond onoon onorn onpop ooooo oopod opcon opdoc opodo oppon orcon orcop ordoc ordon ordro ornon oroco orodo orono p-n-p po-on po-po pocno pocop podo- podor pondo ponor poond poopo popco popon popop poppo porcn porco porn- porno poro- poron porro prodd proor prop- propn propp propr r-co- ro-ro rocco rocor rodoc rodon rodor ronco rondo ronno roond rprop