T19984.hs:10:15: warning: [GHC-49957] [-Wunticked-promoted-constructors]
    Unticked promoted constructor: :
    Suggested fix: Use ': instead of :

T19984.hs:11:11: warning: [GHC-49957] [-Wunticked-promoted-constructors]
    Unticked promoted list.
    Suggested fix: Add a promotion tick, e.g. '[x,y,z].

T19984.hs:12:11: warning: [GHC-49957] [-Wunticked-promoted-constructors]
    Unticked promoted constructor: (:).
    Suggested fix: Use '(:) instead of (:).

T19984.hs:13:15: warning: [GHC-49957] [-Wunticked-promoted-constructors]
    Unticked promoted constructor: :-
    Suggested fix: Use ':- instead of :-

T19984.hs:14:11: warning: [GHC-49957] [-Wunticked-promoted-constructors]
    Unticked promoted constructor: (:-).
    Suggested fix: Use '(:-) instead of (:-).