C11112331333132311331333133313331333132311213331333133313233222311   >>    C1111233133313231133133313331333133313231121333133313331323322231   <<    C11112331333132311331333133313331333132311213331333133313233222313   >>      C11112331333132311331333133313331333132311213331333133313233222312   >>