Output

outs.txt

letters:  ['D', 'Q', 'Q', 'J', 'W', 'D', 'Q', 'N', 'U', 'B', 'T', 'A', 'S', 'Z', 'M', 'V', 'E', 'N', 'Y', 'N', 'S', 'Q', 'Y', 'M', 'Y', 'M', 'C', 'C', 'L', 'Y'] 

tuples:  [('D', 1), ('Q', 1), ('Q', 1), ('J', 1), ('W', 1), ('D', 1), ('Q', 1), ('N', 1), ('U', 1), ('B', 1), ('T', 1), ('A', 1), ('S', 1), ('Z', 1), ('M', 1), ('V', 1), ('E', 1), ('N', 1), ('Y', 1), ('N', 1), ('S', 1), ('Q', 1), ('Y', 1), ('M', 1), ('Y', 1), ('M', 1), ('C', 1), ('C', 1), ('L', 1), ('Y', 1)] 

mapping:  {'A': [('A', 1)], 'C': [('C', 1), ('C', 1)], 'B': [('B', 1)], 'E': [('E', 1)], 'D': [('D', 1), ('D', 1)], 'J': [('J', 1)], 'M': [('M', 1), ('M', 1), ('M', 1)], 'L': [('L', 1)], 'N': [('N', 1), ('N', 1), ('N', 1)], 'Q': [('Q', 1), ('Q', 1), ('Q', 1), ('Q', 1)], 'S': [('S', 1), ('S', 1)], 'U': [('U', 1)], 'T': [('T', 1)], 'W': [('W', 1)], 'V': [('V', 1)], 'Y': [('Y', 1), ('Y', 1), ('Y', 1), ('Y', 1)], 'Z': [('Z', 1)]} 

The letter Y appeared 4 times
The letter Q appeared 4 times
The letter N appeared 3 times
The letter M appeared 3 times
The letter S appeared 2 times
The letter D appeared 2 times
The letter C appeared 2 times
The letter Z appeared 1 times
The letter V appeared 1 times
The letter W appeared 1 times
The letter T appeared 1 times
The letter U appeared 1 times
The letter L appeared 1 times
The letter J appeared 1 times
The letter E appeared 1 times
The letter B appeared 1 times
The letter A appeared 1 times