C313212111133131211331333133313331333133313231333133313331333133313112211213111   >>    C31321211113313121133133313331333133313331323133313331333133313331311221121311   <<    C313212111133131211331333133313331333133313231333133313331333133313112211213113   >>      C313212111133131211331333133313331333133313231333133313331333133313112211213112   >>