discussed Cited "see, e.g." Teel v. STADING Compare Lamm v. McTighe, 72 Wash.2d 587, 592-93 , 434 P.2d 565 (1967) (stating the elements of a boundary line mutual recognition and acquiescence claim) with Chaplin, 100 Wash.2d at 857 , 676 P.2d 431 (stating the elements of an adverse possession claim); see also Campbell v. Reed, 134 Wash.App. 349, 361-63 , 139 P.3d 419 (2006) (analyzing adverse possession and boundary line mutual recognition and acquiescence claims separately), review denied, 160 Wash.2d 1023 , 163 P.3d 794 (2007). ¶ 8 Next, we review questions of law de novo.