Draw up a list of five words with potential nasal release of stops in English, and five with potential lateral release. Record yourself and at least three other of your colleagues saying these words. Use a good quality tape recorder with an external microphone. Input the tokens into the speech analysis package of a PC. Put wideband spectrograms of the tokens on the screen one by one, and note when a nasal/lateral release is used and when it is a vowel plus nasal/lateral. Print out some of the spectrograms of the different types as examples.