for to 8 do 
if then 
topological relation is overlap and directional relation is 

else if then 
topological relation is TPP and directional relation is 
else if then 
topological relation is TPPI and directional relation is 
else if all are approximately equal for all then 
topological relation will be NTPP 
else if all are approximately equal for all then 
topological relation is NTPPI 
else if all are approximately equal for all then 
topological relation will be EQ 
else if then 
topological relation is meet and directional relation is 
else 
topological relation is Disjoint and directional relation is 
end if 
end for 