single color single colour single column single combat single command single comment single commercial single commission single commodity single common single common market single communication single community single compact single company single compartment single competition single complaint single component single components single composite single composition single compound single compounds single comprehensive single computer single concept single concert single condition single conductor single conduit single configuration single connection single connector single console single constituency single contact single contact point single container single continent single continuous single contract single contribution single control single controller single convention single conversation single cop single copies single copper single copy single core single corner single correct single council single count single country single county single couple single course single court single covalent single cover single crack single creature single credit single criminal single criterion single crochet single crop single cross single crystal single crystal silicon single crystal x-ray single crystalline single crystals single culture single cup single currency single customer single customs single cut single cutting single cycle single cylinder single cylinder engine single dad single dads single daily single daily dose single dashboard single data single database single date single daughter single day single day i single day of my life single day of your life