SWORDaku WORD COMP!

OK folks, word game time again. A 4 move SWORDaku! The aim: in 4 new moves, change the word BASE to HOTH. Shimple! All you do is change ONE LETTER to create a new word. This is done 4 times until BASE has changed into HOTH. Very Star Wars I know!

One new word per reader please! Please state which word it is, either 2,3,4 or 5. Go go go!

1. BASE
2. ****
3. ****
4. ****
5. ****
6. HOTH