C11112331333132311331333132313331333133313233121111331333212221   >>    C1111233133313231133133313231333133313331323312111133133321222   <<    C11112331333132311331333132313331333133313233121111331333212223   >>      C11112331333132311331333132313331333133313233121111331333212222   >>