C1231321123223331211111131211113313331333132313331333112233232113312121321   >>    C123132112322333121111113121111331333133313231333133311223323211331212132   <<    C1231321123223331211111131211113313331333132313331333112233232113312121323   >>      C1231321123223331211111131211113313331333132313331333112233232113312121322   >>