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

$"("$ and $")".$ Assign allFirsts with the first color from each string, separated by $"-".$

Ex: If the input is:

$($indigo$-$teal$-$beige$)$

$($gray$-$magenta$-$ochre$)$

$($tan$-$brick$-$red$)$

then the output is:

indigo$-$gray$-$tan