C111123313121111121111331333132313331323133313331322333121133133313231323221221   >>    C11112331312111112111133133313231333132313331333132233312113313331323132322122   <<    C111123313121111121111331333132313331323133313331322333121133133313231323221223   >>      C111123313121111121111331333132313331323133313331322333121133133313231323221222   >>