C111123313121111121111331323133313331333132333133313121111331333133313231221   >>    C11112331312111112111133132313331333133313233313331312111133133313331323122   <<    C111123313121111121111331323133313331333132333133313121111331333133313231223   >>      C111123313121111121111331323133313331333132333133313121111331333133313231222   >>