C12121223131323223313132322331323132313231333132313113313111221   >>    C1212122313132322331313232233132313231323133313231311331311122   <<    C12121223131323223313132322331323132313231333132313113313111223   >>      C12121223131323223313132322331323132313231333132313113313111222   >>