C11212213133313132313231322132313231311331313231333132321123231322331   >>    C1121221313331313231323132213231323131133131323133313232112323132233   <<    C11212213133313132313231322132313231311331313231333132321123231322333   >>      C11212213133313132313231322132313231311331313231333132321123231322332   >>