[
 (expr_logical_or) {
  (expr_logical_and) {
   (expr_equal) {
    t
    ==
    a
   }
   &&
   b
  }
  ||
  (expr_logical_and) {
   c
   &&
   (expr_notequal) {
    k
    !=
    true
   }
  }
 }
]