<s>
50Languages	B-Application
,	O
formerly	O
Book2	O
,	O
is	O
a	O
set	O
of	O
webpages	O
,	O
downloadable	O
audio	O
files	O
,	O
mobile	O
apps	O
and	O
books	O
for	O
learning	O
any	O
of	O
56	O
languages	O
.	O
</s>
