C11112331312111112111133133313331333132212111133133313311223131   >>    C1111233131211111211113313331333133313221211113313331331122313   <<    C11112331312111112111133133313331333132212111133133313311223133   >>      C11112331312111112111133133313331333132212111133133313311223132   >>