C313212111133131211331333133313331333133313231333133313331333132212111112233111   >>    C31321211113313121133133313331333133313331323133313331333133313221211111223311   <<    C313212111133131211331333133313331333133313231333133313331333132212111112233113   >>      C313212111133131211331333133313331333133313231333133313331333132212111112233112   >>