C1111233133313231133133313331333133311221123121111133313113313113321333131   >>    C111123313331323113313331333133313331122112312111113331311331311332133313   <<    C1111233133313231133133313331333133311221123121111133313113313113321333133   >>      C1111233133313231133133313331333133311221123121111133313113313113321333132   >>