birth | 1 year | 2 years | 3 years | 4 years | 5 years | 6 years | 7 years | 8 years |
| | p,m,h,w,b | | | | | | |
| | p,m,h,w,b | | | | | | |
| | n | | | | | | |
| | n | | | | | | |
| | | k | | | | | | |
| | | k | | | | | | |
| | | g | | | | | | |
| | | g | | | | | |
| | | d | | | | | | |
| | | d | | | | | | |
| | | t | | | | | |
| | | t | | | | | | |
| | | ing | |
| | | ing | |
| | | | f | | | | | | |
| | | | f | | | | | | |
| | | | y | | | | | |
| | | | y | | | | |
| | | | r | |
| | | | r | |
| | | | l | | | | |
| | | | l | | | |
| | | | blends (st, pl, gr, etc.) | | | | |
| | | | blends (st, pl, gr, etc.) | | | | |
| | | | s | |
| | | | s | |
| | | | | sh, ch | | | |
| | | | | sh, ch | | |
| | | | | z | |
| | | | | z | |
| | | | | j | | | |
| | | | | j | | |
| | | | | v | | | | |
| | | | | v | | | | |
| | | | | | th (thumb) | | | |
| | | | | | th (thumb) | |
| | | | | | th (that) | | | |
| | | | | | th (that) | | |
| | | | | | | zh (measure) | |
| | | | | | | zh (measure) | |
| | | | | | | | | | | | | | | | | |
*Adapted from Sander JSHD 1972; Smit, et al JSHD 1990 and the Nebraska-IowaArticulation Norms Project
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