import fileinput for line in fileinput input line line -1 s1 line find

import fileinput
for line in fileinput.input():
    line    = line[:-1]
    s1 = line.find('[') + 1  # [17 of 44]
    s2 = line.find(' of ')
    sub = line[s1:s2]
    print(f"mv {line} '{sub:0>2}_{line[1:]}")
print()