C313212111133131211331333133313331333133313231333133313331333133313223112131   >>    C31321211113313121133133313331333133313331323133313331333133313331322311213   <<    C313212111133131211331333133313331333133313231333133313331333133313223112133   >>      C313212111133131211331333133313331333133313231333133313331333133313223112132   >>