受身形 => Passive voice N4
~ぶんには(~分には) => as long as ~ N1
~V使役受身      => causative-passive form N4
Conjugate verbs
[受「う」]け[身「み」] => Passive, be V-ed. N4
Causative, Passive, Volitional
[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional