C111221232313231313231313231323223313132323132313331321123232311   >>    C11122123231323131323131323132322331313232313231333132112323231   <<    C111221232313231313231313231323223313132323132313331321123232313   >>      C111221232313231313231313231323223313132323132313331321123232312   >>