C11112331312111112111133133313231333133313311211331322133311211   >>    C1111233131211111211113313331323133313331331121133132213331121   <<    C11112331312111112111133133313231333133313311211331322133311213   >>      C11112331312111112111133133313231333133313311211331322133311212   >>