... 前に => Before ... N4
Relationship before and after
~ぶんには(~分には) => as long as ~ N1
... 前に => ... in front of, before N4
Relationship before and after
前に => before; in front of ~ N5
を前提に => On the premise of N1
Premise
~ばよかった/~たらよかった/~ばよかったのに/~たらよかったのに => If only N3
~[前「まえ」]に => Before N/Vる(occurs/happens) N5
Time
当然だ/当たり前だ => natural; as a matter of course N2
めったにない => Rarely N3
Degree. Level, Amount
めったに~ない => hardly; rarely; seldom N3
にあたり/にあたって => at the time; on the occasion of ~ N2
としたところで/としたって/にしたところで/にしたって => Even if; Even supposing that ~ N1