BEGIN { RS = "" }
{
if (/^A/)
print "ok"
else
print "not ok"
if (/B$/)
print "not ok"
else
print "ok"
if (/^C/)
print "not ok"
else
print "ok"
if (/D$/)
print "not ok"
else
print "ok"
if (/^E/)
print "not ok"
else
print "ok"
if (/F$/)
print "ok"
else
print "not ok"
}