C313212111133131211331333133313331333133313231333133313331333133313233213112321   >>    C31321211113313121133133313331333133313331323133313331333133313331323321311232   <<    C313212111133131211331333133313331333133313231333133313331333133313233213112323   >>      C313212111133131211331333133313331333133313231333133313331333133313233213112322   >>