C11112331312111112111133133313331333132313233313331311132323231   >>    C1111233131211111211113313331333133313231323331333131113232323   <<    C11112331312111112111133133313331333132313233313331311132323233   >>      C11112331312111112111133133313331333132313233313331311132323232   >>