C111123313331323113313331333133313331323133113313231333133313111321   >>    C11112331333132311331333133313331333132313311331323133313331311132   <<    C111123313331323113313331333133313331323133113313231333133313111323   >>      C111123313331323113313331333133313331323133113313231333133313111322   >>