<s>
BID	B-General_Concept
610	I-General_Concept
or	O
Alvis	O
was	O
a	O
British	O
cipher	B-Algorithm
machine	I-Algorithm
used	O
by	O
both	O
British	O
and	O
Canadian	O
governments	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
fully	O
transistorised	O
full-duplex	O
online	O
cipher	B-Algorithm
machine	I-Algorithm
used	O
by	O
the	O
British	O
Army	O
.	O
</s>
