C1231321123223331211111131211113313331333132313331333112233232113233322121331   >>    C123132112322333121111113121111331333133313231333133311223323211323332212133   <<    C1231321123223331211111131211113313331333132313331333112233232113233322121333   >>      C1231321123223331211111131211113313331333132313331333112233232113233322121332   >>