C111123313121111121111331333132313331323133313331211111133132233131221   >>    C11112331312111112111133133313231333132313331333121111113313223313122   <<    C111123313121111121111331333132313331323133313331211111133132233131223   >>      C111123313121111121111331333132313331323133313331211111133132233131222   >>