C11112331333132311331333133313331333132332311331333133313221323221211233131   >>    C1111233133313231133133313331333133313233231133133313331322132322121123313   <<    C11112331333132311331333133313331333132332311331333133313221323221211233133   >>      C11112331333132311331333133313331333132332311331333133313221323221211233132   >>