たび(に) => whenever; every time ~ N3
たびに => Every time N3
Time, Situation
再び => again; once more N2
及び => and; as well as ~ N2
たぶん => Maybe... N4
Speculation
~にしのびない (~に忍びない)      => cannot bring oneself (to do); unable to bear ~ N1
~んがため(に)/~んがための      => in order to ~ N1
たぶん => perhaps; probably N4
たとたん(に) => as soon as; just as ~ N3
んだった => If... (express regret) N2
Regret
...たいんですが => want N4
How to say the beginning
びる => to seem to be; to appear; to behave as ~ N1