| f | import string | f | import string | 
            |  | import sys |  | import sys | 
            |  |  |  |  | 
            |  | class Pairs: |  | class Pairs: | 
            | n | __slots__ = '_start' | n | __slots__ = ('_offset',) | 
            |  |  |  |  | 
            | n | def __init__(self, N): | n | def __init__(self, initial_value): | 
            |  | self._start = N |  | self._offset = initial_value | 
            |  |  |  |  | 
            | n | def __getattr__(self, name): | n | def __getattr__(self, attribute): | 
            |  | if name in string.ascii_letters: |  | if attribute in string.ascii_letters: | 
            |  | i = string.ascii_letters.index(name) + 1 |  | char_index = string.ascii_letters.index(attribute) + 1 | 
            |  | l = len(string.ascii_letters) |  | alphabet_size = len(string.ascii_letters) | 
            |  | val = (self._start + i - 2) % l + 1 |  | mapped_value = (self._offset + char_index - 2) % alphabet_si | 
            |  |  |  | ze + 1 | 
            |  | return val |  | return mapped_value | 
            |  |  |  |  | 
            | n | def __setattr__(self, name, val): | n | def __setattr__(self, attribute, value): | 
            |  | if name in string.ascii_letters: |  | if attribute in string.ascii_letters: | 
            |  | i = string.ascii_letters.index(name) + 1 |  | char_index = string.ascii_letters.index(attribute) + 1 | 
            |  | step = (val - i) % len(string.ascii_letters) |  | adjustment = (value - char_index) % len(string.ascii_letters | 
            |  |  |  | ) | 
            |  | self._start = 1 + step |  | self._offset = 1 + adjustment | 
            |  | else: |  | else: | 
            | n | super().__setattr__(name, val) | n | super().__setattr__(attribute, value) | 
            |  |  |  |  | 
            |  | def __str__(self): |  | def __str__(self): | 
            | t | l = len(string.ascii_letters) | t | alphabet_size = len(string.ascii_letters) | 
            |  | ans = [None] * l |  | reordered = [None] * alphabet_size | 
            |  | for i, c in enumerate(string.ascii_letters): |  | for idx, char in enumerate(string.ascii_letters): | 
            |  | val = (self._start + i - 1) % l + 1 |  | mapped_position = (self._offset + idx - 1) % alphabet_size + | 
            |  |  |  | 1 | 
            |  | ans[val - 1] = c |  | reordered[mapped_position - 1] = char | 
            |  | return ' '.join(ans) |  | return ' '.join(reordered) | 
            |  | exec(sys.stdin.read()) |  | exec(sys.stdin.read()) |