C1111233133313231133133313331333133313231312111133131133133311222122321   >>    C111123313331323113313331333133313331323131211113313113313331122212232   <<    C1111233133313231133133313331333133313231312111133131133133311222122323   >>      C1111233133313231133133313331333133313231312111133131133133311222122322   >>