C313212111133131211331333133313331333133312111133133313331333133313233213221   >>    C31321211113313121133133313331333133313331211113313331333133313331323321322   <<    C313212111133131211331333133313331333133312111133133313331333133313233213223   >>      C313212111133131211331333133313331333133312111133133313331333133313233213222   >>