<s>
The	O
Ricoh	B-Algorithm
XR-P	I-Algorithm
is	O
a	O
35mm	O
Single	B-Algorithm
Lens	I-Algorithm
Reflex	I-Algorithm
(	O
SLR	B-Algorithm
)	O
camera	O
introduced	O
in	O
1984	O
.	O
</s>
