C11112331312111112111133133313331312111111322331333133313231333132222112131   >>    C1111233131211111211113313331333131211111132233133313331323133313222211213   <<    C11112331312111112111133133313331312111111322331333133313231333132222112133   >>      C11112331312111112111133133313331312111111322331333133313231333132222112132   >>