For pre- and post-training tests, nonsense words were used based on the following structure: initial singleton CV, initial clustered CCV ( /c/ and /f/), medial singleton VCV and medial clustered VCCV (/k/ and /f/) in the context of the vowels /i/, /a/, /u/
Here are some examples
For the training materials, 132 minimal pairs of real words containing the sounds /l/ and /r/ were used. Different speakers were used on different training days.
Here are some examples.