C1111233133313231133133313331323133313113313121111331321123123121   >>    C111123313331323113313331333132313331311331312111133132112312312   <<    C1111233133313231133133313331323133313113313121111331321123123123   >>      C1111233133313231133133313331323133313113313121111331321123123122   >>