に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
に先立って => before; prior to ~ N2
がちです/がちになる => A tends to become/happen/occur N2
Potential, Possibility
うちに => While... N3
いちがいに…ない => Impossible... in general N2
Description
うちに => While; Before ~ N2
のうちに => Within... N3
Limit
ちなみに => by the way; in this connection; incidentally; (conjunction). N2
にちがいない => I'm sure/ certain; no doubt that ~ N2
Speculation
~ぬうちに => While not....; before... N1
Time
か~ないかのうちに => right after; as soon as N2
ちゃんとする => Serious, tidy, complete N3
Result status