C111123313331323113313331333133313231323133312111112111111331322113111   >>    C11112331333132311331333133313331323132313331211111211111133132211311   <<    C111123313331323113313331333133313231323133312111112111111331322113113   >>      C111123313331323113313331333133313231323133312111112111111331322113112   >>