C111123313331323113313331333133313331323132311233133313112221323321   >>    C11112331333132311331333133313331333132313231123313331311222132332   <<    C111123313331323113313331333133313331323132311233133313112221323323   >>      C111123313331323113313331333133313331323132311233133313112221323322   >>