C1111233133313231133133313331323133313113313121111112211231323311   >>    C111123313331323113313331333132313331311331312111111221123132331   <<    C1111233133313231133133313331323133313113313121111112211231323313   >>      C1111233133313231133133313331323133313113313121111112211231323312   >>