C11112331312111112111133133313331333132112312113313231333133313222113212131   >>    C1111233131211111211113313331333133313211231211331323133313331322211321213   <<    C11112331312111112111133133313331333132112312113313231333133313222113212133   >>      C11112331312111112111133133313331333132112312113313231333133313222113212132   >>