C1111233133313231133133313331333132313331322312113313232233132313221211   >>    C111123313331323113313331333133313231333132231211331323223313231322121   <<    C1111233133313231133133313331333132313331322312113313232233132313221213   >>      C1111233133313231133133313331333132313331322312113313232233132313221212   >>