C12121223131323223313132322331323132313231333132313133313231311   >>    C1212122313132322331313232233132313231323133313231313331323131   <<    C12121223131323223313132322331323132313231333132313133313231313   >>      C12121223131323223313132322331323132313231333132313133313231312   >>