<s>
4k	B-Application
is	O
a	O
computer	O
virus	O
which	O
infects	O
COM	O
files	O
and	O
EXE	O
files	O
.	O
</s>
<s>
Infected	O
systems	O
will	O
hang	B-General_Concept
,	O
after	O
September	O
22	O
every	O
year	O
,	O
which	O
is	O
also	O
the	O
date	O
of	O
birth	O
of	O
Bilbo	O
Baggins	O
,	O
a	O
character	O
from	O
The	O
Lord	O
of	O
the	O
Rings	O
.	O
</s>
<s>
It	O
was	O
ported	O
between	O
systems	O
by	O
floppy	B-Device
disks	I-Device
.	O
</s>
