C11231323321111331312111133133313331323132313331333132311211233133313231322131   >>    C1123132332111133131211113313331333132313231333133313231121123313331323132213   <<    C11231323321111331312111133133313331323132313331333132311211233133313231322133   >>      C11231323321111331312111133133313331323132313331333132311211233133313231322132   >>