~に~かい(~に~回)      => Do ~ times in ~ period N5
Frequency
[使「し」][役「えき」] => Coercive, permission, allow, make N4
Causative, Passive, Volitional
使役形 => Causative form N4
[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
~V使役受身      => causative-passive form N4
Conjugate verbs
~しいしい => Every once in a while... (Repeat situation) N1
Repetition, habit
らしい => It looks like N3
Situation
いたします => to do (polite form of します) N4
てもよろしいでしょうか => May I... N4
Allow
いつしか => before one knows N2
Accept, agree
しか~ない => only; nothing but N4
だけしか~ない => only N3