def strpower(i):
    """Stringifies the i'th power"""
    powers = '⁰¹²³⁴⁵⁶⁷⁸⁹'
    if i < 10:
        return powers[i]
    
    result = []
    while i >= 10:
        result.append(powers[i % 10])
        i //= 10
    
    result.append(powers[i])
    return ''.join(reversed(result))