// Static input lines - (I did it dynamic inputs, check my repo)
// github.com/reallithuanianmafia/code-care-task
const inputLines = [
  'asdf',
  'asds',
  'dfaa',
  'aaaa',
  'aabb',
  'aaabb',
];
 
// Process the static input lines
const output = [];
 
for (const line of inputLines) {
  const freq = {};
 
  for (const char of line) {
    if (char !== ' ') {
      freq[char] = (freq[char] || 0) + 1;
    }
  }
 
  const hasExactlyTwo = Object.values(freq).some(count => count === 2);
 
  if (hasExactlyTwo) {
    output.push(line);
  }
}
 
// Print the output
console.log('Output:');
console.log(output.join('\n'));
 

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