C111123313331323113313331333133313231323221212111133131121112131   >>    C11112331333132311331333133313331323132322121211113313112111213   <<    C111123313331323113313331333133313231323221212111133131121112133   >>      C111123313331323113313331333133313231323221212111133131121112132   >>