fffff1111
fffff1111fffff1111fffff1111fffff1111
fffff1111fffff1111fffff1111
fffff1111fffff1111fffff1111
fffff1111fffff1111fffff1111fffff1111fffff1111fffff1111fffff1111
fffff1111fffff1111
fffff1111fffff1111fffff1111fffff1111
fffff1111fffff1111fffff1111
fffff1111fffff1111fffff1111
fffff1111fffff1111fffff1111fffff1111fffff1111fffff1111fffff1111
fffff1111fffff1111