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
反面 => while, although; on the other hand~ N2
に先立って => before; prior to ~ N2
に気がつく => to notice; to realize N4
~みこみがたつ => have a good prospect N1
Expected
ひとつまちがえば => Just (negligence) N3
Ability
~ひょうしに(~拍子に)   => the moment [A], unintentionally / inadvertently caused something to happen N1
~且つ(かつ) => and N1
Line up, list
つつ => while; even though; despite ~ N2
~の) ならべつだが => if it were ~, it would be different, but... N1
Related, corresponding
つつ/つつも => While A, B. Although A (is beng done), B N2
Information, Report
につけ~につけ => each time, whenever, either way N2