Jump to level $1$

Strings list$1,$ list$2,$ and list$3$ are read from input. Each string consists of at least two colors, separated by $"/"$ and surrounded by

$"<mi\; id="EditorElement\_984672">"</mi>$ and $">".$ Assign firstPicks with the first color from each string, separated by $"/".$

Ex: If the input is:

$$ green $\frac{?}{?}$ teal$>$