C313212111133131211331333133313331333133313231333133313331333133313332313212121   >>    C31321211113313121133133313331333133313331323133313331333133313331333231321212   <<    C313212111133131211331333133313331333133313231333133313331333133313332313212123   >>      C313212111133131211331333133313331333133313231333133313331333133313332313212122   >>