syntax = "proto2";

package a;

message One {
  required string one = 1;
}

message Three {
  message Four {
    message Five {
      required string one = 1;
    }
    message Six {
      required string one = 1;
    }
  }
  message Seven {
    required string one = 1;
  }
  message Eight {}
  required string one = 1;
}
