[Ziggurats]

Instructions

Build the ziggurats by starting with the four-letter word at the top, adding the given letters and jumbling to get new words as you step down to the bottom.
Example:

Norse code? [ ] [ ] [ ] [ ]
Unconscious (+[D]) [ ] [ ] [ ] [ ] [ ]
Cash back (+[F]) [ ] [ ] [ ] [ ] [ ] [ ]
Company starter (+[O]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]

Answer: RUNE, UNDER, REFUND, FOUNDER

Smallest of the bunch [ ] [ ] [ ] [ ]
Radio dial (+[E]) [ ] [ ] [ ] [ ] [ ]
Slanderous (+[U]) [ ] [ ] [ ] [ ] [ ] [ ]
Care for (+[N]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]

Housecoat [ ] [ ] [ ] [ ]
Carried (+[N]) [ ] [ ] [ ] [ ] [ ]
Cracked (+[K]) [ ] [ ] [ ] [ ] [ ] [ ]
Cracked (+[S]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]

Nobleman [ ] [ ] [ ] [ ]
Study up on (+[N]) [ ] [ ] [ ] [ ] [ ]
Beyond belief (+[U]) [ ] [ ] [ ] [ ] [ ] [ ]
For us, it's Arabic (+[M]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]