C111221232313231313231313231323223313132323132313331323231323111   >>    C11122123231323131323131323132322331313232313231333132323132311   <<    C111221232313231313231313231323223313132323132313331323231323113   >>      C111221232313231313231313231323223313132323132313331323231323112   >>