C111221232313231313231313231323223313132323132313331323132222331   >>    C11122123231323131323131323132322331313232313231333132313222233   <<    C111221232313231313231313231323223313132323132313331323132222333   >>      C111221232313231313231313231323223313132323132313331323132222332   >>