C11112331333132311331333133313331323133313231131211113313112112233311   >>    C1111233133313231133133313331333132313331323113121111331311211223331   <<    C11112331333132311331333133313331323133313231131211113313112112233313   >>      C11112331333132311331333133313331323133313231131211113313112112233312   >>