C111123313331323113313331333133313331323323113313231323133311231   >>    C11112331333132311331333133313331333132332311331323132313331123   <<    C111123313331323113313331333133313331323323113313231323133311233   >>      C111123313331323113313331333133313331323323113313231323133311232   >>