C3123223313331322121111331333133313231333132212111112111133123313121   >>    C312322331333132212111133133313331323133313221211111211113312331312   <<    C3123223313331322121111331333133313231333132212111112111133123313123   >>      C3123223313331322121111331333133313231333132212111112111133123313122   >>