cfront cocco- cococo cocoon cocto- cofton concon connon connor conoco contor coocoo cornon cornot corton cortot cotton crocco cronon croton foofoo forrot forton fotron n-toon nocto- nocton noforn non-no noncon nonono nonoon noonoo noonor noonto norcot noroff noroof norton notfor notron notton nottoo oconto octoon offton oftfor on-off oncorn onfoot oofotr oooooo orccon oroton ottoor rococo rocoto ronnon ronron rootof rooton rotton to-fro to-on toforn tonono tonoro tonton tootoo torcon tororo tortor totnor totoro totrot trocon tronto trotro