How to create multi-dimension string array

I was thinking to create something like

Code:

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a = {  {"a1", "a2"}, {"b1", "b2", "b3"} }

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Is it possible to do it in array type?
Could someone give me some hint how can I acheive this?

You can't assign arrays, but you can initialise them

Code:

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int main( ) {
  char a[2][3][3] = {  {"a1", "a2"}, {"b1", "b2", "b3"} };
  char *b[2][3] = {  {"a1", "a2"}, {"b1", "b2", "b3"} };
  return 0;
}

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thank you again.