C1231321123223331211111131211113313331333133311311333232233133311   >>    C123132112322333121111113121111331333133313331131133323223313331   <<    C1231321123223331211111131211113313331333133311311333232233133313   >>      C1231321123223331211111131211113313331333133311311333232233133312   >>