C11112331312111112111133133313331333132112312113313231333133313311213112112211   >>    C1111233131211111211113313331333133313211231211331323133313331331121311211221   <<    C11112331312111112111133133313331333132112312113313231333133313311213112112213   >>      C11112331312111112111133133313331333132112312113313231333133313311213112112212   >>