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#include <iostream>
bool isDigit(char x) {
return '0' <= x && x <= '9';
}
bool isLetter(char x) {
return ('a' <= x && x <= 'z') || ('A' <= x && x <= 'Z');
}
bool followsPattern(char letters[4]) {
return isLetter(letters[0]) && isDigit(letters[1]) && isLetter(letters[2]) && isDigit(letters[3]);
}
int main() {
const unsigned int SIZE = 12;
char input[SIZE];
for (unsigned int i = 0; i < SIZE; i++)
std::cin >> input[i];
for (unsigned int i = 0; i < SIZE; i += 4) {
if (!followsPattern(input)) {
std::cout << "Does not follow pattern" << std::endl;
return 0;
}
}
std::cout << "Follows pattern" << std::endl;
return 0;
}
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