YES ---- CR(R) ---- R : left-linear, C : CR and CP-closing, and Cdup/R : SN R: F(x,y) -> c(A()) G(x) -> x h(x) -> c(x) CP(R): critical-pair-closing system C: F(x,y) -> c(A()) h(x) -> c(x) CR(C): see below. ---- CR(R) ---- R : linear and strongly closed [Huet, 1980] R: F(x,y) -> c(A()) h(x) -> c(x) CP(R):