Can you break this code?

This is Magnus code in its simplest form, created clerically 

Below are 7 common English phrases encoded with the same mono-phase encryption.

  • öäèáăìóãāăùõûûùïùöëăõñì

  • ïóìáîòôôöõĉãúëāãáìóâöõãĉôñýï

  • óééõèÿäùãìîýñããüîûíâïùíëùõñúïóìáóâĉî

  • óõùììèõăáêóýöéòáñîöćèéĉëćääùèäĉ

  • ĉëõìüòûäëùùèûúăñìãíćâí

  • âëîäõüáĉûòÿýëóäöôúăò

  • ùúćăéãöëāäâāìùëùîćăéûêõýùèêãéñë