C111123313121111121111331323133313331333132322133313231333131123313231333112121   >>    C11112331312111112111133132313331333133313232213331323133313112331323133311212   <<    C111123313121111121111331323133313331333132322133313231333131123313231333112123   >>      C111123313121111121111331323133313331333132322133313231333131123313231333112122   >>