C313212111113331323312111133133313331333133313331333133313231333133313121213231   >>    C31321211111333132331211113313331333133313331333133313331323133313331312121323   <<    C313212111113331323312111133133313331333133313331333133313231333133313121213233   >>      C313212111113331323312111133133313331333133313331333133313231333133313121213232   >>