C1231321123223331211111131211113313331333132313331333121333112121331323213111   >>    C123132112322333121111113121111331333133313231333133312133311212133132321311   <<    C1231321123223331211111131211113313331333132313331333121333112121331323213113   >>      C1231321123223331211111131211113313331333132313331333121333112121331323213112   >>