11.   The director and designer contend that there is an intricate system behind their use of color and image, but alas, it remains obscure.

12.   The language is pure music, even if its intricate system of tones makes conversation sound a little like a record played backward.

13.   These days, the Navy depends on an intricate system of global communications that ensures that a ship is never out of touch.

14.   They have liked him since training camp, and Reeves has said several times that Kanell picked up his intricate system faster than any player he has ever coached.

15.   They participated in the intricate system of peer review and refereed journals by which new results slowly become public knowledge.

16.   We have built up this intricate system of letting other people get our kicks for us.

17.   Wednesday, dispirited people found it their duty to rapidly reconstruct an intricate financial system.

18.   For the next three months, the U.S. Marines and Army battled an invisible, determined enemy deeply dug into an intricate system of tunnels.

19.   For the next three months, the U.S. Marines and Army battled a determined enemy deeply dug into an intricate system of tunnels.

20.   For the next three months, they battled an invisible, determined enemy that fought from an intricate system of tunnels.