Sutton Athletic F.C.
... that between 1968 and 1971 English non-league football team Sutton Athletic F.C. won three successive promotions whilst also winning three successive league cups?
... that between 1968 and 1971 English <a class="mw-redirect" href="./Non-league_football" id="mwCQ4" rel="mw:WikiLink" title="Non-league football">non-league football</a> team <b id="mwCQ8"><a href="./Sutton_Athletic_F.C." id="mwCRA" rel="mw:WikiLink" title="Sutton Athletic F.C.">Sutton Athletic F.C.</a></b> won three successive <a href="./Promotion_and_relegation" id="mwCRE" rel="mw:WikiLink" title="Promotion and relegation">promotions</a> whilst also winning three successive <a class="mw-redirect" href="./League_Cup" id="mwCRI" rel="mw:WikiLink" title="League Cup">league cups</a>?