C3132121111133313233121111331333133313331333133313331333133313113313222121   >>    C313212111113331323312111133133313331333133313331333133313331311331322212   <<    C3132121111133313233121111331333133313331333133313331333133313113313222123   >>      C3132121111133313233121111331333133313331333133313331333133313113313222122   >>