ことがある/こともある => there are times when N5
~んがため(に)/~んがための      => in order to ~ N1
んだが => Start the story N4
How to say the beginning
ことは~が => although; but ~ N3
…こそ…が => but; although (emphasis) N2
Evaluate
たことがある => Have done A before N4
Situations and Experiences
~みこみがある => There is hope, there is prospect. N1
...たいんですが => want N4
How to say the beginning
んですが => opening the story N4
あがる => ...up (Upwards) N4
Direction
もさることながら => one may well say so, but~; not only... but also ~ N1
~むきがある(~向きがある)     => There is a tendency N1