C111123313121111121111331333133313331323232133313331333133112232212111   >>    C11112331312111112111133133313331333132323213331333133313311223221211   <<    C111123313121111121111331333133313331323232133313331333133112232212113   >>      C111123313121111121111331333133313331323232133313331333133112232212112   >>