~ようが...まいが => whether or not; regardless N1
…どうりがない => No reason... N2
Emphasize negative meaning
うと~まいと,うが~まいが => Whether or not A (is/occurs) N1
Based/focused/depending on
... だろうが、... だろうが => Whether it's ... or ... N3
Demonstrate by example
うが~うが => Whether A or B N1
Miscellaneous
ほうがいい => had better; it'd be better to; should ~ N4
て仕方がない/てしょうがない => can't help but; very; extremely ~ N2
ようがない => There is no way to; it's impossible to ~ N2
た[方「ほう」]がいい => It would be better to A N4
Can, Should, Must
より~ほうが => is more than N5
てしょうがない/てしかたがない => Very A; Really A; Extremely A N2
Degree, Level, Amount
… がいい ... => ... I hope that ... N3
Expected