C11111211113313112113313331333133313331333132212111133133313331322231333311   >>    C1111121111331311211331333133313331333133313221211113313331333132223133331   <<    C11111211113313112113313331333133313331333132212111133133313331322231333313   >>      C11111211113313112113313331333133313331333132212111133133313331322231333312   >>