C111123313331323113313331333133313331323131211113313121111331333132322112111   >>    C11112331333132311331333133313331333132313121111331312111133133313232211211   <<    C111123313331323113313331333133313331323131211113313121111331333132322112113   >>      C111123313331323113313331333133313331323131211113313121111331333132322112112   >>