C1231321123223331211111131211113313331333132313331333112233232113313212131   >>    C123132112322333121111113121111331333133313231333133311223323211331321213   <<    C1231321123223331211111131211113313331333132313331333112233232113313212133   >>      C1231321123223331211111131211113313331333132313331333112233232113313212132   >>