Harness your inner Optimus Prime and help me transform these words into the other word in the corresponding pair. To do this, change one letter at each step to form another common English word (it has to appear in a standard dictionary) until you reach the goal.

For example, to change "Pac" to "Man" in two steps, you might follow this path:

P A C
P A N
M A N

Note that each puzzle almost always has more than one solution. If you find an alternate solution -- especially one that uses less steps than mine -- feel free to share.

I've included some hints on page two, and you can find my solutions on page three.

1) Change "BIT" to "MOB" 
     My solution uses four steps.
     B  I  T
     _  _  _
     _  _  _
     _  _  _    

    M  O  B

2) Change "GOD" to "WAR"
     My solution uses four steps.
     G  O  D
     _   _   _
     _   _   _
     _   _   _

     W  A  R

3) Change "CALL" to "DUTY"
     My solution uses four steps.
     C  A  L   L
    _   _   _   _
    _   _   _   _
    _   _   _   _

    D  U  T   Y

4) Change "RYU" to "KEN"
     My solution uses six steps.
     R  Y  U
     _   _   _
     _   _   _
     _   _   _
     _   _   _
     _   _   _

     K   E   N

5) Change "KILL" to "ZONE"
     My solution uses six steps.
     K   I   L   L
     _   _   _   _
     _   _   _   _
     _   _   _   _
     _   _   _   _
     _   _   _   _

     Z  O  N  E

6) Change "HALO" to "ODST"
     My solution uses six steps.
     H   A   L  O
     _   _   _   _
     _   _   _   _
     _   _   _   _
     _   _   _   _
     _   _   _   _

     O  D  S   T