C11112331312111112111133133313331333132112312113313231333133313222112312311   >>    C1111233131211111211113313331333133313211231211331323133313331322211231231   <<    C11112331312111112111133133313331333132112312113313231333133313222112312313   >>      C11112331312111112111133133313331333132112312113313231333133313222112312312   >>