C313212111133131211331333133313331333133313133313331323221323321   >>    C31321211113313121133133313331333133313331313331333132322132332   <<    C313212111133131211331333133313331333133313133313331323221323323   >>      C313212111133131211331333133313331333133313133313331323221323322   >>