C111123313121111121111331333132313331323133313331211111223311221   >>    C11112331312111112111133133313231333132313331333121111122331122   <<    C111123313121111121111331333132313331323133313331211111223311223   >>      C111123313121111121111331333132313331323133313331211111223311222   >>