Using the letters M, I, and U, which can be used to create words. Can you turn MI into MU using in each step one of the following rules:
Insert a U to the end of a word ending in I. e.g: MI becomes MIU.
Re-insert the letters after the M e.g: MIU to MIUIU.
Replace the letters III with a U. e.g: MUIIIU to MUUU.
Get rid of letters UU. For example: MUUU to MU.
Can you use the 4 rules to change the word MI into MU? If so how many does it take?
Note: Please use spoilers.