へた => Bad at... N5
Evaluate
へたに => Careless N2
Confirm
に/へ => to (indicates direction / destination) N5
そこへ => Right at that moment N3
Time
そこへいくと => In comparison N3
Proportional, parallel
を[経「へ」]て => After A N1
Time, Situation
たいへんだ => It is hard, serious N4
Evaluate
たいへん => very; greatly; terribly; serious; difficult N4
Evaluate
たいへんな... => very; greatly; terribly; serious; difficult N4
Evaluate
さえ/にさえ/でさえ => Even N3
Not only, Not even
~にたえる (耐える)    => bear doing ~ N1
さえ/でさえ => even; so much as; not even N3