<s>
is	O
sometimes	O
called	O
the	O
quincunx	B-Algorithm
matrix	I-Algorithm
.	O
</s>
<s>
It	O
is	O
a	O
22	O
Hadamard	O
matrix	B-Architecture
,	O
and	O
its	O
rows	O
form	O
the	O
basis	O
of	O
a	O
diagonal	O
square	O
lattice	O
consisting	O
of	O
the	O
integer	O
points	O
whose	O
coordinates	O
both	O
have	O
the	O
same	O
parity	O
;	O
this	O
lattice	O
is	O
a	O
two-dimensional	O
analogue	O
of	O
the	O
three-dimensional	O
body-centered	O
cubic	O
lattice	O
.	O
</s>
