C1231321123223331211111131211113313331333132313331333323223322331   >>    C123132112322333121111113121111331333133313231333133332322332233   <<    C1231321123223331211111131211113313331333132313331333323223322333   >>      C1231321123223331211111131211113313331333132313331333323223322332   >>