A previous paper showed how the vocal tract shapes of American English vowels can be generated from three formant frequencies. This algorithm has now been augmented and tested on short utterances containing predominately vocalic segments such as "Where were you a year ago?" Three subjects were recorded saying phrases of this type. Formant frequencies were determined every 10 ms and used to calculate possible underlying components of tongue and lip shape. These components were used to produce sequences of sagittal section diagrams of the vocal tract. Some consonantal effects were taken into account by means of simple rules (e.g., the tongue tip was moved towards a retroflex position whenF3was lowered). Given appropriate formant frequencies, plausible sequences of movement of the vocal organs were generated. Since the same set of formant frequencies can correspond to different vocal tract shapes, no claim can be made that these particular movements were used by these particular speakers. But, throughout most of the utterances, vocal tract shapes were generated thatcouldhave produced the observed formant frequencies.