C11112331333132311331333133313331312111113311212111133132333232321   >>    C1111233133313231133133313331333131211111331121211113313233323232   <<    C11112331333132311331333133313331312111113311212111133132333232323   >>      C11112331333132311331333133313331312111113311212111133132333232322   >>