On the Subject of Passwords
Pyth, 13 bytes

:#%*"[%s]"5Q0c"ABOUTAFTERAGAINBELOWCOULDEVERYFIRSTFOUNDGREATHOUSELARGELEARNNEVEROTHERPLACEPLANTPOINTRIGHTSMALLSOUNDSPELLSTILLSTUDYTHEIRTHERETHESETHINGTHINKTHREEWATERWHEREWHICHWORLDWOULDWRITE"5


Test suite.

 #             filter possible words on
:           0  regex match, with pattern
  %        Q   format input as
    "[%s]"     surround each group of letters with brackets (regex char class)
   *      5    repeat format string 5 times for 5 groups of letters