package ABCDE;

message A {
  optional string name = 1;
  extensions 2 to max;

  extend B { optional A keyab = 11; }
  extend A { optional B keyba = 14; } 

  extend A { optional C keyca = 17; }
  extend B { optional C keycb = 18; }
  extend C { optional A keyac = 12; }
  extend C { optional B keybc = 15; }

  extend A { optional D keyda = 20; }
  extend B { optional D keydb = 21; }
  extend C { optional D keydc = 22; }
  extend D { optional A keyad = 13; }
  extend D { optional B keybd = 16; }
  extend D { optional C keycd = 19; }

  extend A { optional E keyea = 23; }
  extend B { optional E keyeb = 24; }
  extend C { optional E keyec = 25; }
  extend D { optional E keyed = 26; }
  extend E { optional A keyea = 27; }
  extend E { optional B keyea = 28; }
  extend E { optional C keyea = 29; }
  extend E { optional D keyea = 30; }
}


message B {
  optional string name = 1;
  extensions 2 to max;

  extend B { optional A keyab = 111; }
  extend A { optional B keyba = 114; } 

  extend A { optional C keyca = 117; }
  extend B { optional C keycb = 118; }
  extend C { optional A keyac = 112; }
  extend C { optional B keybc = 115; }

  extend A { optional D keyda = 120; }
  extend B { optional D keydb = 121; }
  extend C { optional D keydc = 122; }
  extend D { optional A keyad = 113; }
  extend D { optional B keybd = 116; }
  extend D { optional C keycd = 119; }

  extend A { optional E keyea = 123; }
  extend B { optional E keyeb = 124; }
  extend C { optional E keyec = 125; }
  extend D { optional E keyed = 126; }
  extend E { optional A keyea = 127; }
  extend E { optional B keyea = 128; }
  extend E { optional C keyea = 129; }
  extend E { optional D keyea = 130; }
}


message C {
  optional string name = 1;
  extensions 2 to max;

  extend B { optional A keyab = 211; }
  extend A { optional B keyba = 214; } 

  extend A { optional C keyca = 217; }
  extend B { optional C keycb = 218; }
  extend C { optional A keyac = 212; }
  extend C { optional B keybc = 215; }

  extend A { optional D keyda = 220; }
  extend B { optional D keydb = 221; }
  extend C { optional D keydc = 222; }
  extend D { optional A keyad = 213; }
  extend D { optional B keybd = 216; }
  extend D { optional C keycd = 219; }

  extend A { optional E keyea = 223; }
  extend B { optional E keyeb = 224; }
  extend C { optional E keyec = 225; }
  extend D { optional E keyed = 226; }
  extend E { optional A keyea = 227; }
  extend E { optional B keyea = 228; }
  extend E { optional C keyea = 229; }
  extend E { optional D keyea = 230; }
}

message D {
  optional string name = 1;
  extensions 2 to max;

  extend B { optional A keyab = 311; }
  extend A { optional B keyba = 314; } 

  extend A { optional C keyca = 317; }
  extend B { optional C keycb = 318; }
  extend C { optional A keyac = 312; }
  extend C { optional B keybc = 315; }

  extend A { optional D keyda = 320; }
  extend B { optional D keydb = 321; }
  extend C { optional D keydc = 322; }
  extend D { optional A keyad = 313; }
  extend D { optional B keybd = 316; }
  extend D { optional C keycd = 319; }

  extend A { optional E keyea = 323; }
  extend B { optional E keyeb = 324; }
  extend C { optional E keyec = 325; }
  extend D { optional E keyed = 326; }
  extend E { optional A keyea = 327; }
  extend E { optional B keyea = 328; }
  extend E { optional C keyea = 329; }
  extend E { optional D keyea = 330; }
}

message E {
  optional string name = 1;
  extensions 2 to max;

  extend B { optional A keyab = 411; }
  extend A { optional B keyba = 414; } 

  extend A { optional C keyca = 417; }
  extend B { optional C keycb = 418; }
  extend C { optional A keyac = 412; }
  extend C { optional B keybc = 415; }

  extend A { optional D keyda = 420; }
  extend B { optional D keydb = 421; }
  extend C { optional D keydc = 422; }
  extend D { optional A keyad = 413; }
  extend D { optional B keybd = 416; }
  extend D { optional C keycd = 419; }

  extend A { optional E keyea = 423; }
  extend B { optional E keyeb = 424; }
  extend C { optional E keyec = 425; }
  extend D { optional E keyed = 426; }
  extend E { optional A keyea = 427; }
  extend E { optional B keyea = 428; }
  extend E { optional C keyea = 429; }
  extend E { optional D keyea = 430; }
}

extend A {
  repeated B keyab = 1001;
  repeated C keyac = 1002;
  repeated D keyad = 1003;
  repeated E keyae = 1004;
}

extend B {
  repeated C keybc = 1011;
  repeated D keybd = 1012;
  repeated E keybe = 1013;
  repeated A keyba = 1014;
}

extend C {
  repeated A keyca = 1021;
  repeated B keycb = 1022;
  repeated D keycd = 1023;
  repeated E keyce = 1024;
}

extend D {
  repeated A keyda = 1031;
  repeated B keydb = 1032;
  repeated C keydc = 1033;
  repeated E keyde = 1034;
}