C111123313121111121111331333133313331333133313331333131133132313112113313232221   >>    C11112331312111112111133133313331333133313331333133313113313231311211331323222   <<    C111123313121111121111331333133313331333133313331333131133132313112113313232223   >>      C111123313121111121111331333133313331333133313331333131133132313112113313232222   >>