W SAT  C
p for s T
for j C
clau se ข         SELECT- VARIABLE-FROM-CLAUSE clause  C   p T 
if T
T
end if end for end for return W SAT
SELECT- VARIABLE- FROM- CLAUSE  clause  C   p for xx breaks x C

x end for if clau se br eaks y y return else
- p ret ur n z     clause br eaks z p ret ur n z      clause end if