MISSING TRIOS XLII

For each numbered group below, fill in the dashes with the same three missing letters to complete 7, 6, 5, 4, and 3-letter words. The missing letters may be filled in in any order. The missing trio is different for each group.

1. PR _ _ _ EM

     G _ _ _ ET

      N _ _ _ E

       _ _ W _ 

         _ _ _ 

2. R _ A _ IS _

    H _ _ _ ET

     _ OD _ _

      _ O _ _

        _ _ _

3. _ EF _ UL _

    _ R _ EN _

     _ _ UL _

      _ _ R _

        _ _ _

4. D _ _ H _ SS

      _ R _ IS _

      A _ _ T _

       P _ _ _ 

         _ _ _

5. F _ _ N _ ER

     _ _ G _ UT

      G _ _ R _

        L _ _ _

          _ _ _

Answers:

1. The letters are LOB:

        PROBLEM

         GOBLET

          NOBLE

           BOWL

             LOB 

2. The letters are ELM:

          REALISM

          HELMET

           MODEL

            MOLE

             ELM

3. The letters are TAD:

          DEFAULT

          ARDENT

           ADULT

            DART

             TAD

4. The letters are CUE:

          DUCHESS

           CRUISE

           ACUTE

            PUCE

             CUE

5. The letters are DUO:

         FOUNDER

          DUGOUT

           GOURD

            LOUD

             DUO