Musqueam (Salish) exhibits an interesting set of morphologically related verbs that differ in valency. Analyze the following forms and describe both the affixes used and their effects on argument structure (Suttles 2004: 235) (note that the first two examples are a bit different from the second two):
$$
\begin{array}{|c|c|c|c|c|c|}
\hline \text { háy } & \text { 'finish' } & \text { shá'? } & \text { 'finished' } & \text { shá'? st?xw } & \text { 'have it finished' } \\
\hline \text { tólqt } & \text { ‘dip it’ } & \text { s?éla } & \begin{array}{l}
\text { 'in the } \\
\text { water' }
\end{array} & \text { s?élqstaxw } & \begin{array}{l}
\text { 'keep it in } \\
\text { the water' }
\end{array} \\
\hline \text { xé' 't't } & \text { 'measure } & \text { t'sx? e?é 't } & \begin{array}{l}
\text { 'measured, } \\
\text { marked' }
\end{array} & \text { sx? e?étetstaxw } & \begin{array}{l}
\text { 'blaze (as a } \\
\text { trail), designate } \\
\text { (as a time)' }
\end{array} \\
\hline \text { ?áyt } & \text { 'fixit' } & \text { s????? } & \text { 'right' } & & \text { 'keep it on course' } \\
\hline
\end{array}
$$