<s>
QWERTY	B-Device
Tummy	I-Device
is	O
a	O
term	O
denoted	O
for	O
the	O
phenomenon	O
of	O
an	O
upset	O
stomach	O
that	O
comes	O
from	O
the	O
use	O
of	O
filthy	O
keyboards	O
and	O
in	O
more	O
recent	O
times	O
,	O
from	O
the	O
use	O
of	O
mobile	O
phones	O
 '	O
keypads	O
.	O
</s>
<s>
QWERTY	B-Device
Tummy	I-Device
was	O
first	O
coined	O
by	O
British	O
consumers	O
group	O
in	O
the	O
context	O
of	O
its	O
study	O
on	O
office	O
hygiene	O
.	O
</s>
