Wordit!

You get a pair of words. In order to win, you have to transform the former word into the latter one in the least number of steps possible. A lower average of steps means more efficient solving.

The rules:

On each step, you have to transform the previous word by one of the following:

1. Changing the letters' position.

For instance, the word "team" can be transformed into "meat", "tame" or "mate".

2. Adding/deleting one of the letters.

For instance, the word "mate" can be changed to "mates" or "mat". Thus, "meat" -> "mates".

3. Changing one of the letters: "team" -> "teem"

Also, you can do all three actions simultaneously: "team" -> "meets".

Examples:

Word Day Boy

Row Way Bay

Bow Weak May

Book Week Man