Louis

All JLPT 2 grammar : 一方で（一方で, ippou de）, one (esp. of two); the other; one way; the other way; one direction; the other direction; one side; the other side; one party; the other party

All JLPT 2 grammar : 或いは（あるいは, aruiwa）, or; either ... or

All JLPT 1 grammar : 〇〇たら〇〇たで（〇〇たら〇〇たで, -tara -tade）, it is fine wether there is A or B, it does not matter if A or B, A and B happened and no one could do anything

All JLPT 1 grammar : たが最後（たが最後, taga saigo）, once ones starts A (, then he or she can not stop doing)

All JLPT 1 grammar : たところで（たところで, ta tokoro de）, even in the case ones do A .. (B could not possibly happen)

All JLPT 1 grammar : 〇〇のやら〇〇のやら（〇〇のやら〇〇のやら, -no yara -no yara）, ones is not quite sure if a situation is close to A or B