それが => well yes, actually, now that you mention it; well, in fact ... N2
~ひょうしに(~拍子に)   => the moment [A], unintentionally / inadvertently caused something to happen N1
ば~ほど => The more A, C N3
Degree. Level, Amount
と伝えていただけませんか => Could you tell, Could you convey N4
ことは~が => Although A is true, C N3
Contrast
も~ば~も/も~なら~も => A is B and C is D; neither A is B nor C is D N2
Lists, Examples
ほど~ない => A is not as C as B N4
Comparisons
か~ないかのうちに => Right after A, C N2
Time, Situation
も~なら、も~だ => Both A/B and C/D are bad. N1
Miscellaneous
より~の[方「ほう」]が~ => B is more C than A N4
Comparisons
と、と、どちらが~ => Which is more C, A or B N4
Comparisons
て くださる => A does C for B (B is you, your friends, your family, etc.) N4
Request