Alternately
noun, の adjective
You mix, then you go mutual, then you mix, and then you go mutual. Alternately, you could go mix again?
こうご
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼女は二種類の味のアイスクリームを交互に舐めた。
She alternately licked two kinds of ice cream.