Case Study The following sample is from Tina, age 3 years 8 months. dig [deg] cat [tt] house [have] bath [bt] knife [naf] red [led] duck [dot] ship [Sip] fan [vn] ring [Win] yes [wt] thumb [dm] boat [bout] that [zt] cup [top] zip [wip] lamp [wamp] key [di] goat [dout] win [Jin] Compare the typical vowel productions to those noted in the sample according to the following: 1. The portion of the tongue involved in the articulation (front, central, back) 2. The tongue's position relative to the palate (high, mid, low). For example: dig [deg] A high-front vowel changed to a mid-front vowel Compare the typical consonant productions to those noted in the sample according to voicing, place, and manner characteristics. For example: house [have] A voiceless alveolar fricative [s] is changed to a voice- less dental fricative [0] Continue to analyze the vowel and consonant changes for the other words in the sample.