C111123313331323113313331333133313331323133113313231333131121131211111   >>    C11112331333132311331333133313331333132313311331323133313112113121111   <<    C111123313331323113313331333133313331323133113313231333131121131211113   >>      C111123313331323113313331333133313331323133113313231333131121131211112   >>