my @strings=("/^\\\n.....................C",
		     "/^\\\n............C........C",
		     "/^\\\n.....................B",
		     "Foobar");


/(\/\^\\\n.+C)/ && print "---\n\n$1\n---\n\n" foreach @strings;
__END__
---

/^\
.....................C
---

---

/^\
............C........C
---