C21221212121211331322132313132313331322331313231323132313232212311   >>    C2122121212121133132213231313231333132233131323132313231323221231   <<    C21221212121211331322132313132313331322331313231323132313232212313   >>      C21221212121211331322132313132313331322331313231323132313232212312   >>