C1111233133313231133133313231333133313113313113313331331121111331333233232321   >>    C111123313331323113313331323133313331311331311331333133112111133133323323232   <<    C1111233133313231133133313231333133313113313113313331331121111331333233232323   >>      C1111233133313231133133313231333133313113313113313331331121111331333233232322   >>