<s>
Eight	O
countries	O
are	O
assigned	O
single-letter	O
codes	O
(	O
,	O
,	O
,	O
,	O
,	O
,	O
,	O
)	O
,	O
while	O
the	O
rest	O
have	O
codes	B-General_Concept
three	I-General_Concept
letters	I-General_Concept
in	I-General_Concept
length	I-General_Concept
.	O
</s>
