YES

(VAR x0 x)
(RULES
  c(x0) -> x0
  b(x0) -> x0
  a(x) -> x
)

(COMMENT
Termination is shown by ELPO with interpretations on natural numbers

  a_A(x1) = x1
  c_A(x1) = x1
  b_A(x1) = x1
  a#_A(x1) = x1

and precedence:

c > b > a
)