<s>
Recursive	B-Algorithm
indexing	I-Algorithm
is	O
an	O
algorithm	O
used	O
to	O
represent	O
large	O
numberic	O
values	O
using	O
members	O
of	O
a	O
relatively	O
small	O
set	O
.	O
</s>
<s>
Recursive	B-Algorithm
indexing	I-Algorithm
writes	O
the	O
successive	O
differences	O
of	O
the	O
number	O
after	O
extracting	O
the	O
maximum	O
value	O
of	O
the	O
alphabet	O
set	O
from	O
the	O
number	O
,	O
and	O
continuing	O
recursively	O
till	O
the	O
difference	O
falls	O
in	O
the	O
range	O
of	O
the	O
set	O
.	O
</s>
<s>
Recursive	B-Algorithm
indexing	I-Algorithm
with	O
a	O
2-letter	O
alphabet	O
is	O
called	O
unary	B-Algorithm
code	I-Algorithm
.	O
</s>
<s>
This	O
technique	O
is	O
most	O
commonly	O
used	O
in	O
run-length	B-Algorithm
encoding	I-Algorithm
systems	O
to	O
encode	O
longer	O
runs	O
than	O
the	O
alphabet	O
sizes	O
permit	O
.	O
</s>
