DOUBLE DUTY XXXVII
THREE ON A MATCH #3
Credit: GAMES Magazine - Feb. 2011
N.M. Meyer

The blanks in the first and last three clues below can be filled in with letters which will complete the word beginning on the left and begin the word ending on the right. The letters running down the first column of blanks will make up a bonus word which follows the same pattern. You have to supply the three missing middle letters - although they are given as a hint.

    INT _ _ _ ION
  MAR _ _ _ ACH
   ALC _ _ _ RDO
            _
            _
            _
  TRO _ _ _ NDS
  GOB _ _ _ GER
  CAN _ _ _ DER

HINTS:
The three middle letters, reading down, are UND.
The first letters of the words are:
A
B
O
-
-
-
U
L
Y

Answers:

   intACTion
 marBLEach
   alcOVErdo
        U
        N
        D
   troUPEnds
  gobLINger
  canYONder

Bonus puzzle: aboUNDuly