John is a 4 1/2 year old whose consonantal inventory includes word-initial [ w ], [ m], [ n ], [ p ], [ b ], [ t ], [ d ], and [ f ]. He uses [ t ] for /k/, [ d ] for /ɡ/, [ b ] for /v/, and [ f ]for /θ/. He produces no consonant clusters. His word-final consonantal inventory consists of [m] and [n]. His word shape inventory includes V, CV, CVC, and CVCV. The information given most strongly indicates that the child has
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