C11112331333132311331333131333133313231331121111331323221232211   >>    C1111233133313231133133313133313331323133112111133132322123221   <<    C11112331333132311331333131333133313231331121111331323221232213   >>      C11112331333132311331333131333133313231331121111331323221232212   >>