C1111233133313231133133313231333133313113313113313232211312112111   >>    C111123313331323113313331323133313331311331311331323221131211211   <<    C1111233133313231133133313231333133313113313113313232211312112113   >>      C1111233133313231133133313231333133313113313113313232211312112112   >>