C11112331333132311331333133313331333132313121111331333131232233231   >>    C1111233133313231133133313331333133313231312111133133313123223323   <<    C11112331333132311331333133313331333132313121111331333131232233233   >>      C11112331333132311331333133313331333132313121111331333131232233232   >>