A [dotted?] crotchet, followed by 2 semiquavers of the same pitch, with 1 gracenote preceding each of the latter; Using this, the piper must be sure to avoid the suggestion of playing a final triplet of semiquavers:

e¹-a¹-e¹-d♯¹-e¹ or e¹-a¹-e¹-d¹-e¹; f♯¹-a¹-f♯¹-e¹-f♯¹; g¹-a¹-g¹-f♯¹-g¹; a¹-b¹-a¹-g¹-a¹; b¹-c²-b¹-a¹-b¹; [c²-d²-c²-c♯²-c²?]; e²-a²-e²-d♯²-e²; &c.
NB: Example(s) to be replaced with staff-notation.