C3132121111133313233121111331333133313331333133313331323131133133313231   >>    C313212111113331323312111133133313331333133313331333132313113313331323   <<    C3132121111133313233121111331333133313331333133313331323131133133313233   >>      C3132121111133313233121111331333133313331333133313331323131133133313232   >>