C11212213133313132313231322132313231333132313112331323133313211   >>    C1121221313331313231323132213231323133313231311233132313331321   <<    C11212213133313132313231322132313231333132313112331323133313213   >>      C11212213133313132313231322132313231333132313112331323133313212   >>